10Pcs Ultimate Triangular Drill Bit Triangle Multifunctional Drill Bit Masonry Punching Drill Bit with Carbide Tip for Tile Concrete Brick Glass Plastic Wood and Ceramic -6-6-8-10-12 mm-

The Material of Multi-Material Twist Drill Bit is made of high quality cemented carbide, which prevents drill cracking and improves durability. Anti-slip shrank: Triangular shank allows drill bits to be held tightly and prevents slip. The U-shape groove of Multi-Material Drill Bit allow for effective scraps and heat discharge. Tri-flat on the shanks of drills are constructed for tighter chucking maximizing security for precise holes. Specification: Material: Hard Alloy Tool Holder Type: Triangle Handle Cooling Type: Outer Cold Blade Top Corner: 135? Category: Hole expansion drill Optional Style: 6mm(1/4"), 6mm(1/4"), 8mm(5/16"), 10mm(3/8"), 12mm(1/2") Weight: Approx. Blade Diameter: 6-12mm Package included: 1/4 inch/ 6mm Triangle Drills x 4 5/16 inch/8mm Triangle Drills x 2 3/8 inch/10mm Triangle Drills x 2 1/2 inch/12mm Triangle Drills x 2 Note: Please be sure to add water to cool when using. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures.