Abrasive Flap Disc, 4 1 2 in, 40 Grit, 5 8 in 11 Arbor, 13,000 rpm, Angled ORS NASCO as well as in line air as well as in line air lubricators Prevents rust formation while providing positive lubrication for smooth starting and longer tool life Assures maximum performance by dissolving gum and sludge that cut down tool speed and reduce power output Genuine grain leather palm Kontour Index™ design seam on back of index finger AirMesh™ ultra breathable back provides ultimate comfort and support Pinch'd Tip™ fingers for optimum sensitivity Reliable neoprene knuckle protection with reflective trim Non Ferrous Soft Metal Provides efficient material removal while maintaining surface integrity