The Trimax SXT5 Stainless Steel Receiver Lock has a wider 3-1/2" span that fits all 2.5" Class V receiver hitches. Constructed with machine-forged chrome stainless steel, this receiver lock is weight tested to 40, 000 lbs. An O-ring and weather-resistant rubber cap help keep water, grime, and dirt out of the locking mechanism to ensure years of use. The key is a spring-loaded, 7-pin, high-security key with an easy 1/4 turn lock and unlock. The lock comes with two rugged keys that will not bend or break.• 5/8" pin fits all 2.5" Class V receiver hitches• Wider 3-1/2" span• Stainless steel construction• Rubber cap protects keyhole from water, grime and dirt• Includes two keys O-ring & rubber cap help keep water & grime out of the locking mechanism Includes two spring-loaded, high-security keys with easy 1/4 turn lock & unlock | Trimax Stainless Steel Keyed Receiver Lock, 5/8" x Wider 3-1/2" Span