42MM Heavy Duty Trailer Jockey Wheel Fixing Bracket. Dimensions: Length x Width - 130MM x 55MM. Distance Between Centre Of Holes - 104MM. Hole Diameter - 10.5MM. Finish - Zinc Plated. These clamps are used for holding jockey wheels and prop stands on the side of trailers. They feature rubber grips on the end of the handle for easier use and simply screw clockwise or anti-clockwise to open or close the clamp. The zinc plating resists rust. Please note: We stock a huge variety of accessories for trailers and general transport use. Due to the zinc plating process, the finish may have blemishes. Product Code - SFJOCKM.