What You Get: 2pcs Reducers: 3/8" Female x 1/4" Male, 1/2 inch F x 3/8" M; 2pcs Adapters: 1/4" F x 3/8" M, 3/8" F x 1/2" M Made of premium chrome vanadium steel for maximum strength and durability. The surface of each adapter with black oxide coated, which ensures corrosion resistance Spring-loaded detent balls securely latch onto sockets, preventing them from being dropped Suitable for use with air pneumatic, electric impact wrenches, sockets, ratchets handles, extension bars and other accessories. Specification: color: black Material: Chrome vanadium steel CR-V Surface Treatment: black oxide coated Reducer and Impact Adapter Set Size: 3/8'' drive (Female) to 1/4'' drive (Male) reducer 3/8'' drive (Female) to 1/2'' drive (Male) reducer 1/2'' drive (Female) to 3/8'' drive (Male) reducer 1/4'' drive (Female) to 3/8'' drive (Male) reducer Package Included: 1 x 1/2 "to 3/8" Socket Adapter Reducer 1 x 3/8 "to 1/4" Socket Adapter Reducer 1 x 3/8 "to 1/2" Socket Adapter Reducer 1 x 1/4 "to 3/8" Socket Adapter Reducer