Jet Lube White Knight Drum Lined 16429 93522 Certifications: NSF H1 Registered #048221 Certifications: NSF H1 Registered #048221 (NLGI 1 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 Contains Propylparaben (bacterial fungi static agent) Ideal gears – worm