Rhino Rack 2 Inch Hitch Receiver Locking Pin. This product is already included with the Bike Carrier and is suitable for use as a spare. Specifications for Rhino Rack Hitch Receiver Locking Pin: Manufacturer: Rhino Rack Size: 2 in Weight: 0.2 lb Length: 3.94 in Height: 0.79 in Color: Black Last Chance: Yes Features of Rhino Rack Hitch Receiver Locking Pin For use with RBC038 Rear Hitch Mount Bike Carrier Already included with the RBC038 Bike Carrier but ideal for use as a spare Package Contents: Rhino Rack Hitch Receiver Locking Pin Rhino Rack RBCA025: 2 Inch Hitch Receiver Locking Pin