Product Details Description Specification Videos CHARACTERISTICS Supplied water cools the diamond-tipped teeth, removes dust, and increases drilling efficiency. By the automatic valve mechanism, water is fed to the cutting teeth only while drilling. Since the cutter and body are connected with a thread, simply replacing the cutter will suffice when the cutter teeth are worn. Cracks do not get clogged with dust. The backside surface breakaway is minimized after drilling. Drilling work with low noise and the least amount of vibration and impact transferred to the worker. APPLICATIONS Earthquake-resistant reinforcement work, water-proofing work, building exterior repair work, and drilling pilot holes for installation of anchor bolts. Concrete, mortar, stone, and ceramic tiles drilling work. Bit size : 5/32" to 2 " Overall length : See size table. Shank size : Recommended rotation speed : 1,500 to 15,000rpmDouble insulated electric drills (in the rotary-only mode)