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  • D'Addario Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black
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D'Addario Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black

4.6 out of 5 stars 745 ratings

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  • PROTECT YOUR GUITAR: D'Addario Flex Lock Strap BlocksCprotecting your instrument and your performance. Turn your favorite guitar strap into a locking guitar strap.
  • NO ADDITIONAL HARDWARE: Affordable strap lock solution without the need to replace any hardware. Strap security at a low cost without needing to mod your guitar.
  • NO MODIFICATIONS: Without need of modification, the Flex Lock Strap Block clips onto your guitar strap to prevent your strap from releasing accidentally.
  • EASY TO ATTACH: Snap on top of any Guitar Strap for a secure fit
  • DADDARIO ACCESSORIES - DAddario Accessories (formerly Planet Waves) has been leading the industry in innovative and problem-solving products that serve musicians worldwide.

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Product information

Technical Details

Product Dimensions ‎10 x 10 x 5 cm; 10 g
Item model number ‎PW-FLSB-04BK
Colour Name ‎Black
Item Weight ‎10 g

Additional Information

ASIN B0CH8GD2Q7
Customer Reviews
4.6 out of 5 stars 745 ratings

4.6 out of 5 stars
鶹 Rank
Date First Available Sept. 4 2023
Manufacturer D'Addario & Co Inc.

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D'Addario Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black


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Product description

The Flex Lock Strap Block provides simple, secure protection against accidental strap release. This straightforward solution to an age-old issue gets the job done without any tools or invasive installations, protecting your prized possession in style.

Top Brand: D'Addario

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100K+ customers rate items from this brand highly
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10K+ orders for this brand in past 3 months
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D'Addario Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black
D'Addario Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black
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PriceCurrently unavailable.$10.96$11.79$11.89$34.99$21.75
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Customer reviews

4.6 out of 5 stars
745 global ratings

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Customers say

Customers like the functionality, durability, and ease of use of the product. They mention it works well on a slightly worn out strap, is easy to install, and keeps the strap locked on. Customers also say it's a perfect solution to straps that keep falling off.

13 customers mention "Functionality"13 positive0 negative

Customers like the functionality of the product. They mention it works well and works great on a slightly worn out strap.

"Works perfectly..." Read more

"Easy and simple product. It works great and keeps the strap locked on." Read more

"...These little rubber gaskets work very well. The instrument is secure; the whole point this exercise...." Read more

"I have these on all my guitars and they work totally fine. I actually prefer them to the 2-piece metal straplocks most of the time...." Read more

10 customers mention "Durability"10 positive0 negative

Customers like the durability of the product. They mention it's very good quality, solid, and reliable. They also say it feels super secure and is easy to swap in.

"Super easy to put on. Very sturdy" Read more

"...Very affordable and durable. That is unless you want to spend a lot of money and get these fancy clip systems for $ 40 ?..." Read more

"...some of those swings that throws your guitar around you and it really holds on well, Its very unnoticeable too unlike other ones...." Read more

"Very good." Read more

10 customers mention "Easy to use"10 positive0 negative

Customers find the product easy to use. They mention it's simple and even a drummer could install it.

"Easy and simple product. It works great and keeps the strap locked on." Read more

"Keep it simple, as pictured below. the easiest way to hold your guitar strap on from coming off...." Read more

"...These blocks are discrete, easy to put on and help lock the guitar strap in place. You get many for a good price...." Read more

"...They went on relatively easy and once on its clear they aren't coming off unless you are trying to remove the strap. A+..." Read more

8 customers mention "Strap locking"8 positive0 negative

Customers like the strap locking feature of the product. They mention it works great and keeps the strap in place very well. Some say it's a perfect solution to straps that keep falling off.

"One of the best strap locks that I purchased ?..." Read more

"Easy and simple product. It works great and keeps the strap locked on." Read more

"...while now and they lasted pretty good for its price, It keeps the strap in place very well, I tried some of those swings that throws your guitar..." Read more

"...These blocks are discrete, easy to put on and help lock the guitar strap in place. You get many for a good price...." Read more

4 customers mention "Security"4 positive0 negative

Customers like the security of the product. They mention it's fast, easy, and will protect their guitar from falling.

"...These little rubber gaskets work very well. The instrument is secure; the whole point this exercise...." Read more

"These are very good quality, hold well and will protect your guitar from falling. Buy these!" Read more

"Perfect security for guitar..." Read more

"fast, easy & secure..." Read more

Best way to hold a guitar  strap on, your guitar.
5 out of 5 stars
Best way to hold a guitar strap on, your guitar.
Keep it simple, as pictured below. the easiest way to hold your guitar strap on from coming off. Very affordable and durable. That is unless you want to spend a lot of money and get these fancy clip systems for $ 40 ? Why do you have to remove your guitar strap anyway from your guitar regularly, makes no sense to me?
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Top reviews from Canada

  • Reviewed in Canada on October 13, 2024
    Verified Purchase
    Easy and simple product. It works great and keeps the strap locked on.
  • Reviewed in Canada on January 24, 2025
    Verified Purchase
    Keep it simple, as pictured below.

    the easiest way to hold your guitar strap on from coming off.

    Very affordable and durable.

    That is unless you want to spend a lot of money and get these fancy clip systems for $ 40 ?

    Why do you have to remove your guitar strap anyway from your guitar regularly, makes no sense to me?
    Customer image
    5.0 out of 5 stars
    Best way to hold a guitar strap on, your guitar.

    Reviewed in Canada on January 24, 2025
    Keep it simple, as pictured below.

    the easiest way to hold your guitar strap on from coming off.

    Very affordable and durable.

    That is unless you want to spend a lot of money and get these fancy clip systems for $ 40 ?

    Why do you have to remove your guitar strap anyway from your guitar regularly, makes no sense to me?
    Images in this review
    Customer imageCustomer imageCustomer image
  • Reviewed in Canada on September 23, 2024
    Verified Purchase
    I have used the expensive metal strap locks for year and think they're great. However, I did have one break on me, so I thought I'd try an alternative. These little rubber gaskets work very well. The instrument is secure; the whole point this exercise. It is a 2-step process to remove the strap block and then the strap, but no big deal when you're only paying a few bucks for the item. The little pull tabs make the removal process much easier. Recommended.
  • Reviewed in Canada on January 9, 2025
    Verified Purchase
    Ive had these for a while now and they lasted pretty good for its price, It keeps the strap in place very well, I tried some of those swings that throws your guitar around you and it really holds on well, Its very unnoticeable too unlike other ones. So i recommend getting some for yourself
    Customer image
    5.0 out of 5 stars
    These are great

    Reviewed in Canada on January 9, 2025
    Ive had these for a while now and they lasted pretty good for its price, It keeps the strap in place very well, I tried some of those swings that throws your guitar around you and it really holds on well, Its very unnoticeable too unlike other ones. So i recommend getting some for yourself
    Images in this review
    Customer image
  • Reviewed in Canada on April 6, 2024
    Verified Purchase
    Very good.
  • Reviewed in Canada on January 5, 2025
    Verified Purchase
    I have a strap thats super sentimental but the holes are getting quite worn to the point if I bend over to make adjustments on my board the strap will just fall off the button. I know I know I should get a new end or get it repairedbut this just really helps for cheap and easy until that point! Would work on any strap just for a little EXTRA security as well. Its not a strap lock!! But does add some confidence that your strap wont just fall off.
  • Reviewed in Canada on January 16, 2025
    Verified Purchase
    These are very good quality, hold well and will protect your guitar from falling. Buy these!
  • Reviewed in Canada on September 29, 2024
    Verified Purchase
    I never knew strap blocks were a thing until my guitar cam.undone and fell on the stage as I sang!

    These blocks are discrete, easy to put on and help lock the guitar strap in place.

    You get many for a good price. I put them on all my guitars.

    10/10 recommend

Top reviews from other countries

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  • ahoward
    5.0 out of 5 stars A nice tight fit that keeps the straps securely in place
    Reviewed in the United Kingdom on October 29, 2024
    Verified Purchase
    These are basic but do the job intended very well. They keep the guitar strap safely attached to the guitar and are a very snug fit so they wont work their way loose. So far they havent stretched or come away from the guitar body. Can recommend
  • MSV
    5.0 out of 5 stars Recomendable y econmico
    Reviewed in Mexico on June 13, 2025
    Verified Purchase
    Estos seguros son una especie de empaque de goma, pero cumplen bien su funcin, son relativamente economicos pero funcionan a la perfeccin, considero que si tu correa ya est muy grande o flojo el ojal de la correa, o bien tu guitarra es muy pesada, busques un seguro ms fuerte que tenga clip.
    Report
  • Emanuele1972
    2.0 out of 5 stars Prezzo furto
    Reviewed in Italy on May 3, 2025
    Verified Purchase
    Fanno il loro dovere ma il prezzo un furto
  • ѥ貹쾱쾱
    5.0 out of 5 stars ĿʤXȷg˥ȥåגiֹǤ롣
    Reviewed in Japan on July 10, 2025
    Verified Purchase
    Xȡ긶ǤƤäåƤޤޤ夬ץ\Щ`uʤΤĿʤΤݥȸߤǤȡ긶ѨزĤ\ȥåפʤԶĿˤϸƤΤ狼ʤ̤Ǥ

    ȡ긶gǤDZ˒iʤΤȲˤʤޤgʤäåƤƼˤλäζȤֱ궯ʤ鏎ƤޤäʤǤ

    4Ĥ700ҳ̶Ȥʤ饳ђiȺڴϤ?ʹĵؤǤ
  • Indrajit Mukherjee
    4.0 out of 5 stars Avarage
    Reviewed in India on March 26, 2025
    Verified Purchase
    Not so bad