ROK 26039 1/2in Keyless Drill Chuck / SDS-Plus AdaptorDescription The ROK 1 2in Keyless Drill Chuck SDS Plus Adaptor lets you effortlessly convert your SDS Plus hammer drill into a standard drill. Built from heavy duty all steel construction, this durable adaptor is designed to handle demanding drilling tasks. Its fully adjustable chuck accommodates bit sizes from 1 16in to 1 2in, offering versatility for a wide range of drilling applications. Key Features: Converts SDS Plus hammer drills into standard