General description Ribbed Trailer Clamp designed for securing jockey wheels and prop stands on the side of trailers. This clamp features a metallic grip that can be easily adjusted by screwing it clockwise or anti-clockwise to open or close the clamp. Technical specifications Length x Width: 185MM x 63MM Distance Between Centre Of Hole: 147MM Bolt Hole Diameter: 18MM Finish: Zinc Plated Other information These clamps are zinc plated to resist rust. Due to the zinc plating process, the finish may have blemishes. Product Code: SFJOCKN2