40 piece, shockwave driver bit set, geometric design provides shock absorption, proprietary steel & heat treat process for maximum strength & durability, forged tips for maximum grip, set includes: 1 insert 1/2" socket adapter, one 1/4" magnetic nut driver, one 1/4" shockwave hex drive bit, one 1/8" drill bit, one 3/16" shockwave hex drive bit, one 3/8" magnetic nut driver, one 3/8" socket adapter, one 5/16" magnetic nut driver, 1 shockwave compact magnetic bit holder, 1 hex bit 1" 1/4", 1 hex bit 1" 1/8", 1 hex bit 1" 3/16", 1 hex bit 1" 5/32", 1 phillips bit 1" p1, 2 phillips bit 1" p2, 1 phillips bit 1" p3, 4 phillips bit 2" p2, 1 phillips bit 2" p3, 1 phillips reduced 1" pr2 bit, 1 slotted 1" #10 bit, 1 slotted 1" #8 bit, 1 slotted 2" #10 bit, 1 square bit 1"sq1, 2 square bit 1" sq2, 1 square bit 1" sq3, 1 square bit 2" sq2, 1 square bit 2" sq3, 1 torx bit 1"t15, 1 torx bit 1" t20, 2 torx bit 1" t25, 1 torx bit 2" t20 & 2 torx bit 2" t25.