Auniwaig 2mm Diamond Twist Drill Bits High Speed Steel HSS for Glass Sea Shells Stone 5 Pcs

Auniwaig Diamond Twist Drill Bits Specifications Shank Diameter: 2mm Drill Bit Diameter: 2mm / Material:High speed steel(HSS) Color: Silver Tone Package Content 5 Pcs x Diamond Twist Drill Bits NOTICE * Cannot be used for drilling wood. Diamond drill bit will generate a lot of heat during high-speed rotation, and the heat will burn the wood. * Low-speed drilling is very easy to break the drill bit or causes the diamond particles to fall off. * To prevent the drill from slipping, keep the exposed part of the drill bit as short as possible to enhance the strength of the drill. * 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.