Wokesi 30Pcs Diamond Coated Burs Burrs Set for Jewelry,Glass,Stone,Ceramic,Gemstones Lapidary (BMS-30)

Shape: assortment pack Package: 30 Pcs 1/8 inches Shank Very popular drilling burr tools for drilling holes in Beach Sea Glasses, Stones, Rocks for making Necklaces, Earrings, Pendants and Bracelets. You can use this on marble, ceramics, tile, brick, wood, fiberglass, glass, hardened steel, stone, rock carbide, gold, platinum, silver, plastic, metal, and any solid surface. The burr shapes include: ball cone needle point tapered flat top cylinder ATTENTION: DO NOT RUN DRY Wet drilling only. These are delicate, very small diameter diamond drill bits. The diamond coating is very thin. Can not take any abuse. Start the hole at an angle. While holding the drill in hand, carefully move the drill around just enough to ream out the sides of the hole. Let the tool do the work.