19pcs/set Diamond Drill Core Bits Stone Granite Marble Ceramic Hole Saw M14

https://www.youtube.com/watch?v=m1hvffu6EnA Quantities:19pcs/set each size 1pc Specification: M14 connection, Total height 60MM, Diamond height 10MM Diameter 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 20mm, 25mm, 28mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 68mm,75mm, Color: Red Machine: Suitable for an angle grinder M14 or with one adapter HERE for a drill or cordless screwdriver. Application: Dry/wet drilling for porcelain tile, wall tile, stoneware,granite, marble, stone, Masonry, brick......         Feature:  1.Fast and Smooth drilling 2.Long lifetime  3.Less Chipping  4.Minimizing any breakage  5.Less loss of material  6.Less heat generation 7.Better finish quality