ALL BALLS Chain Roller Lower 79-5016All Balls offers a complete line of OE replacement and universal chain rollers along with a complete application guide. The universal 34mm and 38mm Polyurethane chain rollers have a 98A Durometer hardness for long life and feature sealed precision bearings with two additional outer seals to prevent water and dirt from contaminating the bearings. They are the longest lasting chain roller in the industry. The OE replacement chain rollers that mount