HPMAISON Tungsten Carbide Tip Drill Bits - High quality tungsten carbide tip 7pcs 3mm 4mm 5mm 6mm 8mm 10mm 12mm

Features: Carbide tipped alloy head material with stronger hardness. Carbide tipped drill bits are built for longevity and will stay sharper much longer than you're typical steel drill bit. U type slot design with fast drilling dust remove, Triangular handle design, operation more stable. The 3-flats shank ensures you can hold it firmly, without slip and scratching, will not damage the tile glaze.

Specification: Material: High quality tungsten carbide tip 7 Different Sizes: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm Colour: Black & Siliver Quantity: 7pcs Product Size: As Picture Shows Package Size: 16 x 7 x 1.5 cm

Widely Used: Suitable for drilling tile, concrete, brick wall, glass, plastic and wood, etc. (If you use it to drill concrete and brick, please use water or oil for lubrication.)

Package Included: 1 x 3mm 1 x 4mm 1 x 5mm 1 x 6mm 1 x 8mm 1 x 10mm 1 x 12mm

Warm Notes: 1.When drilling hard material (glass, porcelain floor tile, marble or granite), please use water or oil for lubrication, which helps to extend bits service life,and also can increase drilling speed. 2.Do not use impact mode of drills or hammers when use the Multi-material Drill Bit. 3.The drilling speed of the Multi-material Drill Bit should be slow, especially in the beginning of drilling.

If you have any problems, please kindly let us know in time. We will give you a best solution within 24 hours.