SPKLINE Spline Drive to SDS-Plus Shank Extension Adapter For Spline Rotary Hammer Great Feature: This spline rotary hammer adapter enables you to use SDS-Plus hammer drill bits in a spline drive rotary hammer drill. Special Geometry Design: It perfectly balances the touque and stress betwenn the big spline drive rotary hammer drill and small SDS-Plus shank drill bit to achieve a stable and precise drilling with comfort and little effort. High Quality: Made from industrial grade high-carbon steel with heat treatment and tempered for long life. Ultra durable construction meets the demands of frequent use. Compatiblity: It is compatible perfectly with Bosch and other 3/4 inch Spline shank system rotary hammer drills and demolition hammers. Money Saver: This adapter works very well for using SDS-Plus bits on the larger spline demo hammer drills. With this adapter you only need one spline hammer drill to use all sizes of spline drill bits as well as SDS-Plus drill bits without having to purchase another SDS-Plus hammer drill tool. B083W1TW3V