For use with SDS-plus hammers</br>Adapts to 1/2 inch keyless chuck</br>Bosch makes the highest quality rotary hammer accessories</br></br>Product Description</br></br>' Keyless Chuck?? Standard?? SDS Plus Shank Type?? Shank Size (In.) SDS Plus?? Length (In.) 1-3/4?? For Use With SDS Plus Rotary Hammers?? Application 3 Jaw Chuck '</br><br/>http://www.amazon.com/gp/product/B0062ICGEM