Our quality masonry drill bits refer to: 1) Hammer drill bits (SDS-plus, Hex and SDS-max shank with hand-brazed or auto-brazed carbide tips) with one, two, three or four cutters, 2) Masonry drill bits (milled or cold-forged with hand-brazed or auto-brazed carbide tips and multifunction drilling bits) 3) Glass & tile drill bits (with good YG6X carbide) and Chisels (40Cr steel). The bit diameters are as followings: 1) Masonry drill bits: 3mm-26mm 2) Hammer drill bits: 4mm-32mm 3) Glass & tile drill bits: 3mm-20mm 4) Chisels: Flat, Point, Gouge The overall lengths are based on DIN8039 and also upon customers requests. Our featured auto-brazed hammer drill bits use Germany-made 34CrNiMo6 blank and BC20 carbide with Chinese competitive operating costs to form the final competitive prices with the German quality hammer drill bits, which are all upon our new imported advanced and auto-brazing machine. Welcome global customers to our masonry drill product series.