Material: Diamond & Iron Matrix Colour: Silver Surface Treatment: Electroplating Drilling Diameter: 40MM / 1.57Inches Model: YJ9323 Application: Glass deep-processing Scope of application: glass Marble / Tile / Granite / Jade, etc. Features: - This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other. - Materials and only needs water for lubrication. -Can be used with a standard electric drill. - Use lubrication (water), otherwise the diamond core drill will burn. - Start your hole diagonally, make a round trace and then hold the drill straight.

Read more less