Includes 98 pieces from a popular range of bits for professional users. All bits are forged with Taiwan S2 Steel for maximum durability & performance. Comes with a heavy duty PVC storage kit. Includes one quick release chuck: the chuck holds bits very tightly. No more wiggling, which commonly happens with magnetic bit holders. Bits release by pulling back the blue release ring. The package also includes one magnetic bit holder. PHILLIPS: #00, #0, #1, #1, #2, #2, #3, #4 | SLOTTED: 3/4/4.5/5/5.5/6/6.5/7/8mm | POZI: #1, #2, #2, #3, #4 | HEX: 1.5/2/2.5/3/4/5/5.5/6/7/8mm, 1/16" (1.59mm), 5/64" (1.98mm), 3/32" (2.38mm), 7/64" (2.78mm), 1/8" (3.175mm), 9/64" (3.57mm), 5/32" (3.97mm), 3/16" (4.76mm), 7/32" (5.56mm), 1/4" (6.35mm) TRI-WING: #1, #2, #3, #4 | SPANNER: #4, #6, #8, #10, #12 | TORQ-SET: #6, #8, #10 | SQUARE: #0, #1, #2, #3 | CLUTCH: 1/8" (3mm), 5/32" (3.97mm), 3/16" (4.76mm), 1/4" (6.35mm), 5/16" (8mm) | SPLINE: M5, M6, M8 | TORX: T8, T9, T10, T15, T20, T25, T27, T30, T40, T45 HEX TAMPER: 2/2.5/3/4/5/6mm, 5/64" (1.98mm), 3/32" (2.38mm), 7/64" (2.78mm), 1/8" (3.175mm), 9/64" (3.57mm), 5/32" (3.97mm) | TORX TAMPER: T8H, T10H, T15H, T20H, T25H, T27H, T30H, T35H, T40H