2.4 x 11.4mm 150 Grit Cone Diamond Burr, 1/8 inch shank
Reviewer: Melinda from Jacksonville, IL 06/15/2008 These are great! I use them by holding the bead in a container of water to clean the release out of my lampwork beads. They each last a very long time and they never get rusty! The prices here are the best anywhere!