Description:* This hole saw needs to be used at a low speed, about 800-1000RPM.* Please start your hole diagonally, make a round trace and then hold drill straight.* In order to prolong the life of this glass hole saw, please work with coolant when processing.* Widely used for drilling marble, granite, tile ceramic, stone, rebar concrete, etc. Specification: * Color: Blue* Material: Carbon Steel, Diamond Particles* Drilling Diameter: 12mm / 0.47-inch* Drilling Depth: 48mm / 1.89-inch* Shank Diameter: 8mm / 0.31-inch* Total Length: 80mm / 3.15-inch Package Content: * 1 x Diamond Hole Saw.
eBay