20pcs 3.5mm Diamond Coated Cylinder Head Drill Bits Set for Drilling Stone

Diamond Coated Cylindrical Grinding Mounted Point Bits Burrs Fits Dremel Type Rotary Tool can be used in your rotary hand drill, die grinder, pendant drill, flexible shaft and drill press. Diamond cylinder dremel bits are a high-speed cutter made of steel tipped with diamond particles. Ideal for fine detail work on wood, jade, ceramic, glass, hardened steel and other hard materials. Removes material quickly and easily. For curved surfaces. Made from galvanically bonded diamond impregnated steel. Ideal for carving hard or soft materials and Coated with diamond grit they are great for carving and sculpting in stone, glass, bone, ceramic and hard wood.
APPLICATION: typically used to enlarge existing size holes. Also recommended for drilling pearls.
ceramic, tile & related materials
advanced ceramics
glass & quartz
optical materials
composites
natural & synthetic stone
semi-precious & precious stone
many other materials