The Kincrome socket sets are perfect for any professional application. Manufactured from chrome vanadium steel, these sockets have been hardened, tempered, chrome plated, and polished for corrosion protection. All are protected by a sturdy machined tin. Kincrome Sockets and Accessories are Manufactured from Chrome Vanadium Steel (Cr-V) and Chrome Plated to Prevent Corrosion Durable 72 Teeth Quick Release Ratchet - The socket is locked securely while in use but can be removed quickly and easily even with greasy or oily fingers Supplied in a tin with insert for the storage Specifications 10 1/4 Drive Metric Sockets: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13mm 10 1/4 Drive Imperial Sockets: 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2 10 1/4 Drive Metric Deep Sockets: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13mm 10 1/4 Drive Imperial Deep Sockets: 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2 18 25mm PTA Impact Bits Phillips: No1, No2, No2, No3 Hex: 2, 3, 4, 5, 5, 6mm TORX: T10, T15, T20, T25, T27, T30, T40 Blade: 6.5 7 Accessories Ratchet Handle 1/4 Drive Universal Joint 1/4 Drive Extension Bar 1/4 Drive 50mm Extension Bar 1/4 Drive 150mm Torquemaster Spinner Handle 1/4 Drive Coupler 1/4 Drive PTA Impact Quick-Release Bit Coupler 50mm