Wolf Tools 1/2 inch Inside Ring Sanding Mandrel - 5/32 inch shank
Wolf Tools 1/2 inch Inside Ring Sanding Mandrel, 5/32 inch shank. Slot is about 23mm long. 5/32 inch / 4mm shank. Use inexpensive sheet sandpaper. A terrific idea developed by Kate Wolf for sanding and finishing the inside of rings. Made of stainless steel. Shank is 5/8 inch long. Maximum 10,000 RPMs.