' Straight Grinding Wheel, Wheel Type Bench/Pedestal, Diameter 8 In., Thickness 1 In., Arbor Size 1 In., Abrasive Material Aluminum Oxide, Grit 60, Grade Medium, Bond Type Vitrified, Specification MEDIUM PREMIUM ALUNDUM, Application For High Speed Steel and Tool Steels RC 55 and Higher, Max. RPM 3600, Series Alundum, Color White '