3 4" Drive Impact Universal Joint ORS NASCO XL flap discs have 50% XL flap discs have 50% more material than regular density flap discs [Nom] 4 1 2 in Hardness Grade Medium Hazmat NO Jan San Catalog NO Material Rubber Prop 65 NO Quantity 1 each Quarterly Flier NO Special Order NO Speed [Max] 11 Tight tolerances for snug fit on fastener Ball and spring design which allows for a 30° working angle Designed to withstand the high torque and force associated with impact tools in repetitive application Features two through holes and a groove to accept a Proto® Retaining Ring or pin and O ring to help secure the socket to the drive tool anvil Position at appropriate angle to turn fasteners where obstructions prevent a straight application