Diamond core bits are used for drilling concrete, reinforced concrete, and asphalt, with fast drilling and long life, usually turbo segmented, or roof segmented which is better. Size from 25.4mm to 230mm. Diameter: 25.4-230mm Length: 300-470mm Thr... - Update: 2009-09-14

Diamond core bits are used for drilling, porcelain, marble, granite, concrete, asphalt or reinforced concrete, with fast drilling and long life. Segments type includes normal segment, roof segments, turbo segments and crown segments. Size from 6.5mm ... - Update: 2009-09-10

Diamond core bits are used for drilling stone, with fast drilling and long life, usually turbo or crown segment. Size from 6.5mm to 250mm. Diameter: 6.5-250mm Thread size, 3/8�� or 1/2�� shaft without thread Delivery time: Around 30days We, Joh... - Update: 2009-09-14

Electroplated diamond core bits are mainly used to drill glass, ceramic tile, fiberglass, man-made marble, and most any light steel. It is great for DIY market where cost is essential. And for shank, it has 3/8��, 5/8��-11, M14, G1/2��, etc. Can run ... - Update: 2009-09-14

Vacuum brazed diamond milling bits is used for milling groove of inner side of stone. For various marble and granite, with special diamond brazing technology, diamond is firmly brazed onto the center, which makes its cutting efficiency higher, workin... - Update: 2009-09-14