High-Speed Reinforced Cut-Off Wheels- Type 1 Aluminum Oxide – Metal and Steel High-Speed Reinforced Cut-Off Wheels – Type 1 Product Specifications UPC# Size Specification R.P.M Carton Quantity 35501 3 X 1/32 X 3/8 A-60-R-BF 23,900 50 35507 4 X 1/32 X 3/8 A-60-R-BF 19,100 50