Gooseneck ROUND TUBE Lock includes Cobra-Sidewinder puck lock

ULTRA-HIGH SECURITY TRAILER COUPLER/HITCH LOCK: The straightforward and strong design fits most Round Tube Gooseneck couplers to include the Bulldog BX1. HEAVY DUTY TRAILER LOCK: This no-nonsense Gooseneck Round Tube coupler lock is constructed of 3/16" fully welded cold rolled steel, with welded hinges and hinge pins and is bolt cutter and crowbar proof! HIGH SECURITY PUCK LOCK: Cobra SideWinder has extreme picking resistance, limited key blank access and over 250 million key code combinations available. Each Cobra SideWinder lock has 10+ combination locking plates each containing multiple anti picking grooves. The locking plates align with a sidebar to keep the inner cylinder engaged with the shell in the locked position. SideWinder locks have a Symmetrical key that will work in either direction, making this a very user-friendly lock. BRIGHT YELLOW POWDER COAT FINISH: We believe in presenting a hard target that is why we use a bright yellow powder coat to warn off would be thieves. ROUND TUBE: Make sure to double check your tube. This Gooseneck Coupler Lock only fits the Round Tube Gooseneck. If you have a square tube Gooseneck coupler, please check out our square tube version. FT. KNOX LOCKS: We are a family run and operated small business with our locks designed and proudly made in the USA.