I wanted a case to store the various bits I had laying in a drawer. The case should hold a lot, allow for various height bits, and be small and lightweight. I wanted it to lock to prevent inadvertent opening during transport.

This design allows for adjustable bit holder height and quantity by allowing multiple bit holder "bars" to be added/removed. The bit "bars" rotate allowing for easy access to the bits and the ability to store bits that are taller than the case is thick.

The only issue is trying to get the bit bar in the bottom hole as it is a tight fit. Some filing of the bar may be required to allow it to snap in place.