900# Boride Engineered Abrasives Sharpening Grinding Oil Stone Product Name : Abrasives Grinding Oil Stone;Granularity : 900# Material : Abrasive, Resin;Overall Size : 150 x 12x 6mm/5.9" x 0.47" x 0.24" (L*W*T) Color : Coffee Color Weight : 25g Pakcage Content : 1 x Abrasives Grinding Oil Stone