GLFILL Durable Diamond Coated Core Drill for Glass Marble Granite Diamond Drill Bit

Features: *Round shank design fit for most drill chuck. *Wax inside for cooling Dry drilling without water. *Very high efficiency multi-purpose drilling. *Long life drilling. *For drilling granite & marble masonry concrete tile/ceramic glass hard plastic..... Specifications: Hole dirll size: 6/8/10/12/14/16mm Diamond Length: 10mm Material: Diamond Color: Blue Shank: Round Shank With cooling wax Package Contents: 1 x Drill Bit