This is an OEM part sourced directly from the manufacturer. The chuck key is designed for use with Craftsman drills. This part is made of metal, and is a replacement for the tool that was originally included with the machine. It is used to tighten and loosen the chuck that holds the drill bit. This item is sold individually.
This is an authentic Craftsman replacement part, sourced from the original manufacturer for use with electric drills. The special chuck connects to the drill\\\'s spindle assembly and is used as a rotating vise that holds the bits. This item is available as an individual replacement part, please see illustrated diagram for related parts.