Features: Special tilting head design: accurate positioning and fast entry when drilling on tiles, efficient drilling. Mechanical principle design: deeped drilling without effort, preventing the accumulations of chips; long service Irregular cutting edge design of the cutter head: when drilling, each cutter edge can work when the drill is pressed down, the cutter edge trajectory is especially sharp. When drilling on ceramic tiles, accurate positioning and fast entry, efficient drilling Precise positioning without deviations For drilling wood brick wall ceramic cements metal home decoration; for Tile Drill, Electric Drill Crooked Head Ceramic Eccentric Drill Cements Wall Tile Special Triangled Drill Specifications: Component:Hardened Metal Types：8mm/6mm/10mm/12mm Optional Quantity：4PCS Package Includes: 4PCS Precision Drilling Set note: Transition:1cm=10mm=0.39inch Due to the problem of lighting effects and shooting, there nmightbe certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.