Features: SK adapters allow for greater flexibility for all your sockets and drive tools. Ball detent securely holds sockets on coupler, to prevent slippage. SuperKrome universal joints can be angled to almost any position to provide improved access in confined areas. Ball detent securely holds socket in place. SuperKrome plating on adapters and universal joints results in a jewelry-like finish, providing ease of clean-up and maximum corrosion resistance. Impact universal joints feature a black coating that retains more rust preventative compound than black oxide. All three joints feature a ball retainer. Set Contents: 1/4”F-3/8”M Drive, 3/8”F-1/4”M Drive, 3/8”F-1/2”M Drive, 1/2”F-3/8”M Drive, 1/2”F-3/4”M Drive SuperKrome Adapters; 1/4”, 3/8”, 1/2” Impact Universal Joints with Ball Retainer; 1/4", 3/8” Universal Joints. Packaged in a molded plastic case.