Features: 1.The cutter head is made of cemented carbide, the hardness can reach 45HRC 2.Triangular cutter head has less resistance and can improve work efficiency 3.U-shaped groove drill bit design, drilling and chip removal more smoothly 4.The surface is coated with electrophoretic paint to prevent the drill bit from rusting 5.1/4 inch hexagon shank not easy to slip, easier and safer to install in all electric tools 6.6 different sizes, 5/32" (4mm), 3/16" (5mm), 1/4" (6mm), 5/16" (8mm), 3/8" (10mm), 1/2" (12mm) 7.Applied to ceramic tiles, glass, hard plastics, cement concrete, mirror travertine, brick walls, wood Warm Tips: 1.When drilling hard material (glass, porcelain floor tile, marble or granite), please using water for lubrication 2.4mm and 5mm are small size, please do not use impact mode when using Specifications: Item name: Masonry drill bit set Material: Cemented carbide Shank:1/4" hex shank Cutter head type: Triangular Surface treatment: Electrophoretic paint Size: 5/32" (4mm), 3/16" (5mm), 1/4" (6mm), 5/16" (8mm), 3/8" (10mm), 1/2" (12mm) Package size: 6.3 x 3 x 0.4 inches Package weight: 0.51lb Package list: 1 x 5/32" (4mm) masonry drill bit 1 x 3/16" (5mm) masonry drill bit 4 x 1/4" (6mm) masonry drill bit 2 x 5/16" (8mm) masonry drill bit 1 x 3/8" (10mm) masonry drill bit 1 x 1/2" (12mm) masonry drill bit Our products have been well tested, you can rest assured that your purchase is guaranteed. Any problems please feel free to contact us first.
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