Segment wet dry diamond core drill bit

~Product Description1.Featured sintered diamond drill are to professional wet cutting various hard ceramics, tile, porcelain, granite slab, marble slab, etc.2. Fast and smooth cutting is guaranteed with extra longer cutting life for industrial usages also.3. Max cutting depth 30mm. Cutting rim Height all on 10mm tall ones.4.On the bottom of the shank, there is that water hole for water connector fitting to wet cutting work.5.The core bit sets are available.~~Size:Diameter(mm)