Small Bulk Storage Case System Set. Flexible storage options – Small Bulk Storage case fits inside the small, medium and large cases as well as the TSTAK compatible accessory caddy. TSTAK compatible to hold all your accessory sets in one place. Fits in the TSTAK Caddy. Optimized Tip Geometry for full fitment in the fastener and reduced cam-out. Full-fit head eliminates wobble and screw head rounding. Heat treated for longer life. Magnetic Drive Guide reduces stripping and wobbling. Magnets allow case to be fixed to any ferrous surface. Built-in hooks for hanging case.