An ideal, high quality Trailer Lock for securing the trailer to your vehicle. Durable chrome finish and top quality lock with a dust cover/cap for added weather/wear related protection. Patented pick-proof threaded technology. Made in USA. Dead Bolt Receiver Style with Flush Locking Design. Covered Key Slot Prevents Corrosion. 2 Silver keys included. Helps Prevent Coupler Release From Ball. Helps Prevent Attaching Unattended Trailer To Ball. Pin Diameter: 1/4" Pin Length: 2" MFG Item #RC3