A CURT adjustable ball mount is your multipurpose towing solution. This CURT channel mount uses a shank with multiple mounting holes to allow for easy height adjustment. A variety of attachments - including a two-sided trailer ball, a ball mount tongue and ball and pintle combinations - can be mounted in the channel to accommodate a variety of towing situations. This lock set adds security and peace of mind to your towing setup, allowing you to replace the pins and clips of the channel mount with key-operated locks.