uxcell 10 Pcs 0.9mm 1.7mm Diamond Twist Drill Bits High Speed Steel for Glass Sea Shells Stone Tiles - f22030300ux0008

• [Specifications] - Drill Bit Dia.: 0.9mm / 0.035-inch, 1.7mm / 0.067-inch. Drill Bit Length: 11mm / 0.43-inch, 14mm / 0.55-inch. Shank Dia.: 0.6mm / 0.024-inch, 1.2mm / 0.047-inch. Total Length: 25mm / 1-inch, 38mm / 1.5-inch. 5 x 0.9mm Diamond Twist Drill Bits, 5 x 1.7mm Diamond Twist Drill Bits [MATERIAL] - Diamond coated high speed steel(HSS) is made by spiral technology, has both toughness and hardness, is not easy to break. The drill bit is sharp, and is easy for chip removal. [APPLICABLE MACHINE] - Widely used in rotary tool such as hand drills, drill press, flex shafts, bench drill and hanging mill. [APPLICATION] - Suitable for drilling small holes on glass, metal, sea shells, jade, pearls, marble, stones, drywall and son on. Due to the different hardness of the material, the effect is also different. [NOTICE] - When drilling, it is necessary to add cutting fluid in time to lubricate and cool down, which can get a better drilling hole wall, extends the service life and drilling accuracy.