This is a 3D Printed drill bit sharpening guide for the Dremel Rotary Tool, or any other similar mini-drill with an M19-2 thread. This has three distinct angles at 90°, 118°, and 135° which allow you to sharpen virtually any type of drill bit up to 3/4" in diameter.
Each order includes a genuine Dremel #420 15/16" Grinding Disc