Easily mount lead ballast to roll cage tubing, 1/2"-13 thread mount points on each side of the clamp with a 6" long stud included, Anodized purple for a durable and attractive finish, Clamp on design eliminates the need for welding, Available for 1 1/4", 1 1/2", 1 3/4" round tubing or 2" square tubing.