This Bosch mixed drill bit set comes with 103 pieces and can be used with impact drivers, drilling and screwdriving. All pieces are compatible with attractive mixed set that covers all common applications, and organised in a moulded display carry case. The set includes various types of drill bits for metal, masonry, and wood, as well as screwdriver bits, spade bits, and hole saws. It also comes with a bit holder, hex key, and a counter sink & hole saw adapter. This kit is compatible with all twist chuck drills from any brand and is supplied in a convenient carry case.