BGTEC Diamond Finger Bit 20mm M14 Thread Vacuum Brazed Milling Enlarging and Shaping Round Bevel Existing Holes for Tile Stone Porcelain Hard Ceramic Marble Granite Countertop

1pc 20mm Vacuum Brazed Diamond Milling bits finger bits for tile, stone, countertop 20MM Diameter,50MM workable length, M14 thread, Total Length: 65mm, Grit #45/50 It is a versatile milling bit designed enlarge, shape and/or round bevel existing holes in Porcelain, Hard Ceramic, marble and granite. It's also suitable to easily create round side indentation necessary to accomodate pipes or electric wire lines. This is a save money tool because with just one standard core bit and this finger bit you are able to create many different hole sizes. Vacuum brazed technology provide high efficient working performance Very easy to operate. Recommended for Tile Setters, General Contractors, Plumbers and Electricians.Not recommend to make a hole directly