Description: Professional tool for commercial or occasional use. Use ordinary drill bits with your SDS and drill Comes with 1/2" keyless chuck as well as SDS adaptor for easy application and fitting. Adaptor simply fits into SDS drill as would a drill bit Can be used on ordinary 1/2" drills as well as SDS drills. Specification: Thread: 1/2"(13mm) x 20 UNF Overall Length: Approx. 126mm/ 4.96inch Capacity: 2mm-13mm Material: Plastic+ Steel Color: Black Package Includes: 1 Piece SDS Adaptor 1 Piece Drill Chuck Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement