Uxcell 4Pack Mini Twist Drill Bit 1.3mm Micro Engraving Drill Bits High-Speed Steel 2.35mm Shank Uncoated

Uxcell 4Pack Mini Twist Drill Bit 1.3mm Micro Engraving Drill Bits High-Speed Steel 2.35mm Shank Uncoated 1. Made of high-speed steel with great toughness and hardness not easy to break easy chip removal the drill quenching treatment improve the hardness of use. 2. This twist drill is proper for electric drill hand electric drill and impact electric drill. Suitable for diy resin amber and wood drilling. 3. Spiral flute design for quick cleaning of chips. The sharp cutting edge provides a smooth cut without glitches. Chip removal is not easy to stick to the tool. 4. Adapt to several kinds of cooling conditions for example oil mist water oil air cooling. Tips: When drilling the drill bit should be drilled reciprocally not all the way into. The reciprocating drilling can bring the debris out to avoid blocking the hole. When it is about to be drilled through it should be played on the other side not once to avoid the edge of the drilling collapse.