28-PC. Bit SetComes in an easy to open or close boxEasy choice: bits can be viewed without opening the boxBox has high shock and chemical resistanceEfficient pushing system on the back of the boxContains: Slotted 3/16", 1/4" and 5/16"; Torq® T10, T15, T20, T25, T30 and T40; Hex 3mm, 4mm, 5mm, and 6mm; 1/4" hex bit holder and (2) or the following: PH1, PH2, PH3, PZ1, PZ2 and PZ3