Great variety of bits with great durability. Clear sizing written inside. The case is overall solid and durable.
The only case weak point I found is the clasp part that keeps the case shut (mine broke). I store this loose in a rolling tool box that i wheel to job sites and so it perhaps takes more of a beating so to speak than most. Due to the clasps movable nature and style of attachment it is a main piece that can be damaged and leave the case unable to close - which is a risk for losing pieces.
Just be careful with how you place and carry these things for longevity of use as they aren’t quite as rock solid as they appear.