ONE ADAPTER/REDUCER SET FOR ALL YOUR NEEDS: Our 4-piece impact-grade adapter and reducer kit includes 1/4"(F) to 3/8"(M) - 3/8"(F) to 1/4"(M) - 3/8"(F) to 1/2"(M) - 1/2"(F) to 3/8"(M). UNLIKE ALL THOSE FLIMSY SOCKET ADAPTERS our robust impact adapters and reducers are made from heat-treated Chrome Molybdenum alloy steel for enhanced durability. GET A BIGGER BANG FOR YOUR BUCK: While other socket reducers are vulnerable to rust and corrosion, our adapters are treated with a rust-proof Manganese Phosphate coating. REDUCE FATIGUE & DISCOMFORT: the smart spring-loaded detent ball system will prevent dropping while the through-hole in the drive end will securely lock the adapter onto the drive tang. GET YOUR SET OF ADAPTERS WITH ZERO RISK – Meet & Exceeds ANSI (The American National Standard Institute) and backed by our Lifetime Limited Warranty for your complete peace of mind., Weight: 0.103176338616 pounds, Manufacturer: LEXIVON