PFERD Economy Roll General Purpose Aluminum Oxide Er 50 A 50mm x 50mm 40 to 320 GRITPferd Er 50 50x50 Advantages: High Flexibility High Tensile Strength Very Good Grain Adhesion Application Examples: Manual Grinding In Hard To Reach Areas Grinding Of Irregular Contours, Concave Or Convex Curvatures On Pipes Fine Finishing Of Turned Parts Work In An Engineering Workshop Suitable For Manual Grinding Of All Types Of Materials. Abrasive: Aluminum Oxide A