3PC Socket Driver Adapter Drill Bit Adaptor 3/8" 1/2" 1/4" For SDS Plus Hammer Drill Socket Adapters Suitable for SDS Drills with their SDS Plus Shanks, Though They Can Also Be Used on Standard Regular Drill Chucks. Suitable for use by the professional tradesman or the DIY enthusiast. Socket Driver Set 1/4"(6.35mm)3/8"(9.5mm)&1/2"(12.7mm) DIY Power Tool Accessories Converts SDS Plus drills to socket drivers Socket Driver Set Drills Drill Bit Adaptor