【Keel Roller Size】: 7-5/16" long x 3-3/8" diameter with 0.65" diameter hole.
【Galvanised bracket】: 8-3/16 "L x 6-3/16 "W with 5/8" shaft. Finish is zinc plated to ensure long-lasting corrosion resistance to water, dirt, road salt, etc.
【Mounting Slot Size】: Mounting slot size is 1/2", required 1/2" or 7/16" fasteners are not included in the package.