A high-quality, hard-wearing white aluminium oxide bench grinding wheel with extra fine grit. Suitable for sharpening high speed steel (HSS) tools and grinding non-ferrous metals including alloys. Dry-cutting use only. Manufactured with a 31.75mm bore and supplied with 5 reduction rings enabling each bench grinding wheel to fit most bench grinders with a bore size between 12.7 – 31.75mm. Compatible with 19mm and 20mm wheel face Draper Bench Grinders: 66804, 05095, 83421, 29620.