The Kincrome K28051 socket set is perfect for any professional application, complete with a 1/4" ratchet and assorted metric and imperial sockets. Manufactured from chrome vanadium steel, these sockets have been hardened, tempered, chrome plated, and polished for corrosion protection. All protected by a sturdy machined tin. Contents:10 x 1/4" Drive Metric Sockets: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13mm7 x 1/4" Drive Imperial Sockets: 7/32, 1/4, 9/32, 5/16, 3/8, 7/16, 1/2"2 x 1/4" Drive Extension Bars: 50, 150mm1 x 1/4" Drive Reversible Ratchet1 x 1/4" Drive Spinner Handle1 x 1/4" x 1/4" Coupler Holder1 x 1/4" Universal Joint3 x 9 Piece Screwdriver Bit Set (Phillips, Hex, Blade) | Kincrome 1/4" Drive Metric And Imperial Socket Set - 50 Piece