Simple, quick change of drill accessories by click release. Swap from drill to screwdriver bit with out re-chucking, saving time and effort. 3/8? hex shaft. Contents: one each of Quick change Chuck - Bit holder - Bits: Slotted 4, 5, 6, & 7mm, PZ1, 2 & 3. PH1, 2 & 3. Hex 3, 4, 5, 6 & 7mm. TX10, 15, 20, 25, 30 & 40.