Chuck Adapter Product Type Chuck Adapter Chuck Style SDS-Plus Overall Width 2 13/64 in Overall Length 4 in Compatible with Manufacturer Part Number 11250VSR 11253VSR 11255VSR 11536C 11536VSR GBH18V-20 GBH18V-26 GBH18V-26D GBH18V-34CQ GBH2-26 GBH2-28L RH328VC RH328VCQ RH432VCQ RHH181 Material Steel Includes SDS-Plus Shank Chuck Size 1/2 in Drill Chuck Type Keyed