13mm keyed chuck and SDS adaptor including key.  Allows fitting of standard 13mm chuck to SDS Plus rotary hammer drill machines.  Suitable for use in all hammer drill machines with SDS plus fitting with a function turn off the hammer action. Enables you to hold conventional straight shank masonry drilling, metal drilling and wood drilling bits in an SDS drill. Key Features: ½” capacity chuck ½” x 20 UNF thread S2 Chuck Key SDS adaptor