The RYOBI 28 PC. 3/8" Drive Ratchet and Socket Set has a 90 tooth ratchet, providing a 4° arc swing for 20% more efficiency in tight spaces. The included extension and swivel joint allow for more access. The large size markings allow for quick and easy identification, saving time on the project. 6 point sockets provide maximum torque without rounding fasteners. The quick release ratchet allows for efficient socket changes and the chrome finish resists corrosion. Keep everything organized with the included LINK Wall Compatible storage case. The 28 PC. 3/8" Drive Ratchet and Socket Set is backed by the RYOBI limited lifetime warranty and includes (1) 90T 3/8” Drive Ratchet, (13) Metric Sockets 7,8,9,10,11,12,13,14,15,16,17,18,19MM, (12) SAE Sockets ¼”, 5/16”, 11/32”, 3/8”, 7/16”, ½”, 9/16”, 5/8”, 11/16”, ¾”, 13/16”, 7/8”, (1) 3/8” Drive Universal Joint and (1) 3” Extension.