'Round Tip Grinding Plug, Grinding Cone Type 18R, Grinding Cone Diameter 1-1/2 In., Grinding Cone Length 3 In., Arbor Hole Size 3/8 In.-24, Abrasive Material Aluminum Oxide, Abrasive Grit 24, Max. RPM 24,190, Specification 57A24-R, Package Quantity 10'