This comprehensive 172 piece socket set uses the superior grip of the Super Lock profile for its shallow sockets and the standard 6 point profile for it's deep sockets. With a good selection of 1/4", 3/8" and 1/2" drive accessories and a hand ratchet for each drive size, this set will be a good addition to anyone's tool collection. Super Lock sockets use a unique design meaning the greater the torque applied, the more they will grip the nut or bolt. Very handy for removing stubborn, worn or rusty nuts and bolts. 1/4" Drive: 13 - Shallow Super Lock Sockets: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14mm 7 - Deep Sockets Standard 6 Point: 4, 5, 6, 7, 8, 9, 10mm 5 - E-Profile Sockets: E4, E5, E6, E7, E8 8 - Star Bit Sockets: T8, T9, T10, T15, T20, T25, T27, T30 8 - Tamper Star Bits: T8H, T9H, T10H, T15H, T20H, T25H, T27H, T30H 3 - Pozi Screwdriver Bit Sockets: PZ0, PZ1, PZ2 3 - Philips Screwdriver Bit Sockets: PH0, PH1, PH2 4 - Slotted Screwdriver Bit Sockets: SL4.5, SL5, SL6.5, SL7 4 - Hex Bit Sockets: H3, H4, H5, H6 2 - Extension Bars: 50mm & 100mm 1 - Universal Joint 1 - Sliding T-Bar 115mm 1 - Spinner Handle 150mm 1 - Bit Adapter for 1/4" Hex Drive Bits 3/8" Drive 10 - Shallow Super Lock Sockets: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm 6 - Deep Sockets Standard 6 Point: 10, 11, 12, 13, 14, 15mm 1 - Spark Plug Socket: 14mm 6 - E-Profile Sockets: E10, E11, E12, E14, E16, E18 1 - Extension Bar: 125mm 1 - Universal Joint 1 - Bit Adapter for 5/16" Hex Drive Bits 1/2" Drive 17 - Shallow Super Lock Sockets: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 27, 30, 32mm 5 - Deep Sockets Standard 6 Point: 16, 17, 18, 19, 22mm 2 - E-Profile Sockets: E20, E24 2 - Spark Plug Sockets: 16mm, 21mm 2 - Extension Bars: 125mm, 250mm 1 - Sliding T Bar Handle 1 - Universal Joint 1 - Bit Adapter for 5/16" Hex Drive Bits 1 - 1/4" Drive 72 Teeth Quick Release Ratchet Handle 1 - 3/8" Drive 72 Teeth Quick Release Ratchet Handle 1 - 1/2" Drive 72 Teeth Quick Release Ratchet Handle 1/4'' Hex Drive Bits (25mm) 10 - Torx Bits: T8, T9, T10, T15, T20, T25, T27, T30, T40, T45 4 - Hex Bits: H3, H4, H5, H6 3 - Philips Screwdriver Bits: PH0, PH1, PH2 3 - Pozi Screwdriver Bits: PZ0, PZ1, PZ2 5/16" Hex Drive Bits (30mm) 6 - Star Bits: T40, T45, T50, T55, T60, T70 6 - Tamper Torx Bits: T40H, T45H, T50H, T55H. T60H, T70H 5 - Hex Bits: H7, H8, H10, H12, H14 2 - Philips Screwdriver Bits: PH3, PH4 2 - Pozi Screwdriver Bits: PZ3, PZ4 3 - Slotted Screwdriver Bits: SL8, SL10, SL12 7 - Hex Keys: 1.5, 2, 2.5, 3, 4, 5, 6mm