[Applicable materials]:The surface of diamond tipped drill bit coated diamond ,ensure that the rotary burr tool is suitable for drilling seashells,seaglass,rocks,stone,pipes,porcelain etc
[Product Usage]: The diamond drill bit set can be used for glass drilling holes, DIY handmade projects, gemstone grinding and polishing of nails, etc. Compatible with Dremel,electric nail drill and carving machine with a 3/32" collet
[Usage Tips]: The diamond tip drill bit may be hot during use, you can add some water to prevent the drill bit from overheating.