The Kobalt #856846 2pc. Swivel Adapter Set is designed for use with 3/8” and 1/2” drives, making it versatile for various automotive tools. The impact-rated construction ensures durability and reliability, while the SAE system of measurement ensures compatibility with a wide range of applications. This set includes two adapters, providing a convenient solution for connecting to different sockets and tools. The manufacturer part number, 856846, allows for easy identification and organization. Additionally, the product comes with a California Prop 65 warning for safety awareness.