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The TOGGLER SNAPTOGGLE BB toggle anchor provides a secure hold from within various hollow materials 3/8" to 3-5/8" thick including gypsum board, drywall, and concrete block, and is made in USA. The anchor requires a 1/4"-20 UNC-threaded metal bolt with a minimum length equal to the thickness of the item being fastened and the thickness of the mounting material plus 1/2". The anchor channel will not rotate when installing the bolt, whether installing by hand or with a screw gun, and will stay in place if the bolt is removed to facilitate fixture and screw changes. The SNAPTOGGLE anchor meets Federal Specification FF-B-588-D for Type V anchors.The anchor consists of a corrosion-resistant zinc-plated steel anchor channel that inserts through a 1/2" drilled hole in walls, ceilings, or floors and installs against the back side of the mounting material; plastic straps attached to the channel that position it into place; and a plastic cap that slides down the straps and presses into the drilled hole firmly to lock the anchor channel in place behind the mounting material. Once the cap is set in place, the straps snap off by hand. The item being fastened affixes to the mounting material by inserting a bolt through the item, into the drilled hole, and through the anchoring channel behind the material and tightening.SpecificationsUltimate Tensile and Shear Strength ValuesMediaDrill DiameterBolt DescriptionUltimate Tensile StrengthUltimate Shear Strength1/2" Drywall1/2"1/4"-20 UNC zinc-plated steel265 lb.241 lb.5/8" Drywall1/2"1/4"-20 UNC zinc-plated steel356 lb.324 lb.1/2" Drywall with 25 Gauge Stud*1/2"1/4"-20 UNC zinc-plated steel425 lb.Not available5/8" Drywall with 25 Gauge Stud*1/2"1/4"-20 UNC zinc-plated steel464 lb.Not availableConcrete Block1/2"1/4"-20 UNC zinc-plated steel1,080 lb.Not available*Failure measured as breakage of drywall portion.Warning: Use one-fourth or less of listed maximum values for safe working loads (as required by local regulations). For more information, see the manufacturer's technical bulletin.Anchors provide reinforcement to a fastener that would otherwise have insufficient hold in substrates such as concrete, brick, stone, drywall, or other materials for a particular application. The fastener may be included with or integrated into the anchor itself, or it may be sold separately. Anchors provide support through various methods, including expansion from within or behind the substrate or even adhesive compounds.TOGGLER Anchor System manufactures wall anchors and toggle bolts. The company, founded in 1968, is headquartered in Norwalk, CT.