Standard Abrasives Unitized Mounted Point 877066, 821 B42 x 1/8 inGeneral Information Brand Standard Abrasives Attachment Type Shaft Country Of Origin United States Lead Time 2 days California Residents Proposition 65 Warning Dimensions and Specifications Head Diameter (Imperial) 0. 5 in Head Diameter (Metric) 12. 7 mm Maximum Speed 33750 rpm Overall Length (Imperial) 0. 75 in Overall Length (Metric) 19. 05 mm Shank Diameter (Imperial) 0. 12 in Shank Diameter (Metric) 3. 04 mm Grit Non Pertinent Micron Grade Non