Norton Gemini Aluminum Oxide T-27 Depressed Center Wheels are used for cutting exotic alloys, iron, metal and stainless steel. Features Quality aluminum oxide Consistent, maximum performance aluminum oxide wheels at a competitive price Quick stock removal on hard metals Ideal for small job shops on a variety of metalworking applications DescriptionGemini Aluminum Oxide T-27 Depressed Center Wheels, 6 x 1/4 x 5/8-11 Size, 10185 Max RPM, Gemini Disc Style:StyleGemini DiscSize6 x 1/4 x 5/8-11Max RPM10185