Black oxide coating. Set includes 3/8 in drive impact extensions, 3 in and 6 in, 3/8 in drive impact universal joint, 3/8 x 1/2 in impact increasing Adapter, 3/8 in drive drill Adapter, 1/2 in drive impact extensions: 2.5 in and 5 in, 1/2 in drive impact universal joint, 1/2 x 3/8 in impact reducing Adapter, 1/2 in drive drill Adapter with a lockable stacking case for easy storage.
