Stainless Steel Receiver Lock -fits 2", 2-1/2" and oversized receivers. Made from Stainless Steel with aluminum heads 99.99% rust-free materials Receiver pin fits all standard 2" and 2-1/2" receivers Over 30,000 lbs shear strength Triple ball bearing and cam-style locking mechanism Clik-Lock system securely locks with one push (no 'false' locks) 2 Heavy-duty keys (keyed alike and reversible) Rubber dust cap protects key slot from liquids and other grime Provide 24/7 security for your hitch mounted accessories Dimensions: 3-1/2" x 5/8" (inside shank)