The Kennedy® SDS Drill Chuck Adaptor enables you to hold conventional shank drill bits for use in any SDS rotary drill. With a 10mm dia SDS fitting at one end and a 1/2"x20 UNF threaded Drill chuck connection at the other, once fitted to a suitable chuck the arbor allows rapid and secure tool changing of conventional and SDS bits. Complete with M6 left hand thread countersunk retaining screw to fix securely inside your chuck and hexagon flange for extra torque when fitting. Not recommended while hammer action is in use, suitable for rotary mode only. 75mm overall length.