RAM MOUNTS Aluminum trackball T bolt attachment RAM-B-463-TRA1U B size 1 inch ball

Designed for truck mounting systems including RAM Tough-Track. Includes 1" B size rubber ball with pin lock and 1/4" to 20" threaded hole with T-bolt. Features rubber friction washers and stainless steel T-bolts; simply insert into the track and tighten by turning the ball clockwise. Constructed from marine grade aluminum, stainless steel components for durability and reliability in the harshest environments. Lifetime warranty

The RAM Track Ball consists of a B-sized 1-inch ball molded into a marine-grade aluminum base. Rubber friction washers and stainless steel T-bolts allow it to slide into almost any track system. Simply insert or slide the track ball into the track and turn the ball clockwise to tighten it into place. You can loosen or adjust the ball by twisting it counterclockwise.