These sanding and smoothing stones fit any rotary tool like a Dremel tool, or my portable glass grinder that I have listed. They are used for smoothing glass edges after they are cut with my bottle cutter or glass cutter.

Each package comes with 3 green stones, and 3 coral stones. The coral stones are a medium grit, while the green stones are a finer grit.

Each package comes with a little booklet tht I wrote that teaches you how to smooth glass like the pros do!!