Description:4pcs 6\/8\/10\/12mm Ceramic Drill Bits Set Tile Glass Cement Spiral DrillSpecification:          Material       Hard tungsten steel alloy           Diameter       Total length           6mm       100mm           8mm       116mm           10mm       120mm           12mm       122mm           Quantity       4pcs        Features: - The drill bit is made of hard tungsten steel alloy、 which is made by precision welding with a sharp drill bit. - The surface is clean、 smooth、 durable、 not easy to collapse the head、 drilling easy and high efficiency - Unique dual slot design、is in the ordinary ceramic drill to do the slotting processing and more conducive to ash - Head adopts is made of hard tungsten alloy material、 stronger hardness、 and no damage to wall tiles.   Usage: Applicable to a variety of materials on the hole、 can be in the ceramic tile、 brick wall、 wood、 glass、 plastic and other drilling operations. Especially to solve the ordinary drill point in the wall.  Package Included:4 x Ceramic DrillMore Details: