? The following electric hammer drill bits are machined from chrome steel fitted with carbide insert brazed at a very high temperature to withstand severe heating when drilling hard materials. L-shaped flute profile improves dust discharge. Sand blasted surface. Other industrial surface finish available. ? For drilling in granite, concrete, stone, masonry, tiles and marble. ? ?3.0-30.0mm, Total length: 90-460mm ? Fits hammer drills with SDS-Plus chucking and 2-slot chucking system. It can be used with Electric Hammer of BOSCH Co., AEG. Co., BLACK & DECKER Co., HILTI Co., PHILLIPS Co., HITACHI Co., and MAKITA Co., The shank is round with dual-arc and dual-key way. Price Condition CIF shanghai Origin made-in-china Material carbide steel , 40Cr Packaging 50 pcs per carton Package Size 0.8 x 0.4 x 0.6 Meters Delivery lead time within 7 days after your confirmation Minimum order 10000 pcs Supply ability 1 million annually