eature:100% brand new and high quality.SDS Drill Socket Nut Impact Driver AdaptorsSDS Socket Driver SetFor use with SDS drillsMaterial: chrome vanadium steelInner Hex Size is standard 1/4 inch(6.35MM)Product use: can make the hammer， impact drill which is originally sds connection convert to hex shank.Suitable for use by the professional tradesman or the DIY enthusiast.Socket Adapters Suitable for SDS Drills with their SDS Plus Shanks， Though They Can Also Be Used on Standard Regular Drill Chucks.Package included:2pcs Electric Hammer Sds Socket Driver Set Drill Bit Adaptor