4Pcs Triangle Drill Bit Set 6 8 10 12mm Ultimate Punching Drill Bit Masonry Drill Bit with Tungsten Carbide Tip for Concrete Brick Glass Plastic Tile Twist Head Drill Bits.

Prouduct Description Do you need a durable drill that won't break easily? Are you troubled by the burning of the drill bit while you are machining the hole? Do you feel helpless because the cutting edge is not sharp and the drilling efficiency is low? We have found a solution for you! Try Our 4 drill set The drill body is made of high-quality Tungsten steel Cutting head, 45# carbon steel blade, surface spray plastic,which has a longer service life. A family decoration can be done, applicable: Tile, Brick, Cement, Concrete, Glass etc Meets the Ergonomics The newly added anti-skid triangle handle design is firm in operation, and the flashlight clamping does not slip. The spiral chip space design speeds up chip removal, improves work efficiency and saves time and effort. Exquisite non-rust plastic storage, easy to store and carry. Tips 1. Recommended speed of drill set: 100-800 / MIN, the larger the diameter, the slower the speed requirement. 2. Do not knock when using, the workpiece must be fixed. 3. For products with large thickness, if there is abnormal chip discharge, please remove the debris in time. When the bit is overheated, the cooling effect is better. 4. The drill bit can be reused after grinding. Specification: 1X diameter: 6mm(1/4") 1X diameter: 8mm(5/16") 1X diameter: 10mm(3/8") 1X diameter: 12mm(1/2")