Rubber side guide rollers 2.5 diameter by 8.75 long. 58 center hole $12.00 ea3 rubber bow rollers. 12 hole $5.00 eaRubber roller ends. 2.5 diameter. 12 hole $4.00 ea.You can align several side guide rollers together to make a roller on the back of your raft trailer or pontoon boat.