NON WOVEN NYLON ABRASIVE GRINDING WHEEL 1.made up of high temper nylon 66 staple, ... ROTATION SPEED ≤3000R/MIN MAIN APPLICATION All kinds of metals,Wooden wares,Plastic wares,Marble FUNCTION weld grinding, surpace preparation,blending ... cleaning,deburring. FEATURE Keep colour and shape,Good polished brightness,No black discoloration,Abration resistant,Stable,Durable