Features and Benefits:•Set includes 13 metric and 13 SAE hex keys covering sizes 1.5, 2, 2.5, 3, 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10mm, 0.05", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", and 3/8"•Chamfered edges on both ends of the hex key help guide the key into the fastener•Caddy marked with size identification provides organized storage•Caddies can be attached together to keep keys organized in one place•Keys made with alloy steel for maximum strength and to resist rotational distortion•Short or long side can be used, providing access and speed in all situations•Meets or exceeds ANSI and ASME standards•Backed by a Lifetime WarrantyGEARWRENCH® is a premier mechanics hand tool brand, offering products that are designed and manufactured to meet the tough requirements of Professional Automotive Technicians and Industrial users. Since the launch of its original patented five-degree ratcheting wrench in 1996, the GEARWRENCH® brand has continuously led the industry with breakthroughs in wrenches, ratchets, sockets, and specialty tools.