- NEW DESIGN: U-shaped drain groove, spiral handle design, easy to remove chips during work, smoother drilling. 10 pcs drill bit set with 5 different sizes: that is3/16” (5mm),1/4” (6mm), 5/16” (8mm) ,3/8” (10mm), 1/2” (12mm) fit your different needs.
- EXQUISITE CRAFTSMANSHIP: The surface of the drill bit is treated by fine polishing, and the new electroplating process can prevent the drill bit from rusting and prolong the life of the drill bit.
- HIGH-QUALITY HARD ALLOY: The cutter head is made of cemented carbide. Hardness up to 45HRC, Triangular cutter head resistance is smaller. And it can improve work efficiency, higher hardness than ordinary drill bit, more wear-resistant.
- 8 DIFFERENT SIZES:8 pieces fine grade high durable drill bits that is 3mm ,4mm 5mm, 6 mm,7mm, 8 mm,10 mm, 12 mm fit your different needs .It Can be installed in the general electric hand drill, bench drill. The machine drill clamp range is 10mm and above.
- WIDE USAGE: Professional glass and tile drill bits provide smooth and accurate drilling in ceramic tiles, marble, thin iron plate, mirrors and glass. Remember to add Water or coolant when drilling.