3/4" drive 21pcs auto tool set 1. blue metal case 2. metric size 3. carbon steel, chrome plating 3/4" drive 21pcs auto tool set, socket wrench16 sockets: 19, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 41, 42, 45, 48, 50mm1pc ratchet 495mm1pc sliding handle 456mm2pcs extension bar 200mm and 100mmpacking: metal case (blue)material: carbon steel auto tool set 3/4" drive 21pcs