The 12mm Diamond Grinding Head Cylinder Burr sharpening Bit for Dremels by POD is a high-quality tool accessory designed for sharpening blades, used with Dremel grinding Tools with a 3mm collet. The 12mm diameter of the grinding head provides versatility for various projects. I personally use these bits for sharpening my hedge cutters, along with the Die grinder 6mm collet on my other listings.
eBay