Expert Quality, twelve point socket made from chrome vanadium steel that's hardened and tempered with a polished finish. Each socket has a knurled ring for extra grip. Supplied with a 72 tooth reversible ratchet and accessories. Packed in a tough plastic storage case with soft grip handle. Manufactured and tested generally in accordance with DIN3122 and ISO3315 Specifications Features and BenefitsExpert Quality17 metric sockets9 imperial sockets4 metric deep sockets3 spark plug sockets72 teeth reversible ratchetSpinner handleFlexible handle3 extension barsSliding T bar Contents 17 x Metric socket: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22mm 4 x Metric deep socket: 8, 10, 12, 13mm 9 x Imperial socket: 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4" 3 x Spark plug socket: 10, 12, 14mm 1 x 72 tooth reversible ratchet with "quick release" button 3 x Wobble extension bars: 75, 150, 250mm 1 x Sliding 'T' bar 1 x Flexible handle 1 x Univ