high quality diamond core drill bit

~Description:A.Featured sintered diamond drill are to professional wet cutting various hard ceramics, tile, porcelain, granite slab, marble slab, etc.B.Fast and smooth cutting is guaranteed with extra longer cutting life for industrial usages also.C.Max cutting depth 30mm. Cutting rim Height all on 10mm tall ones.D.On the bottom of the shank, there is that water hole for water connector(Item Number: DCD1015-M14) fitting to wet cutting work.SIZE:Diameter(mm) Shank Type Item