30Pcs 0.8mm-4mm Diamond Coated Tipped Tip Twist Drill Bit for Glass Jewelry Stone Tile

The drill bit made from twist drill bit and diamond coated. The flute is spiral groove design for easy chip removal and improved drilling efficiency with round fit hand electric drills cordless drills bench drill and hanging mill etc. Suitable for jewelry jade metal Agate Jade glass stone gemstones pearls pendants Cobblestone. Please add some water when drill a hole. Diameter: 0.8mm 1mm 1.2mm 1.5mm 1.8mm 2mm 2.5mm. Material:diamond colour:Silver Package Contents: 30 * Diamond Twist Drill Bits(0.8mm/1mm/1.2mm/1.5mm/2.0mm/2.5mm each 5) Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.