Standard Abrasives Zirconia Precision Cartridge Roll, 726124, C1-ST,80General Information Brand Standard Abrasives Bond Type Resin Country Of Origin Germany California Residents Proposition 65 Warning Dimensions and Specifications Center Hole Diameter (Imperial) 0. 25 in Center Hole Diameter (Metric) 6. 35 mm Grit 80 Overall Diameter (Imperial) 0. 5 in Overall Diameter (Metric) 12. 7 mm Overall Length (Imperial) 2. 5 in Overall Length (Metric) 63. 5 mm Shank Size 0. 25 in Other Details Industries Metalworking Roll Form