Overall Height: 17"Wheel Size: 8"Wheel: Pneumatic Rubber Finish: Zinc PlatedLoad Capacity: 200 lbs.Mounting Plate Size: 3-3/4" Wide X 5-1/2" TallVertical Spring Distance: 2-1/2"360 Degree And Universal Swivel Mount Makes This A Popular Option For Large GatesSpring-Loaded Design Promotes Easy Open And Close And Eliminates Gate Sag Over Time And Across Uneven SurfacesOversized Air-Filled Pneumatic Tire Promotes Easy Rolling Over Rough Terrain And Requires Little Initial Thrust To Open Or Close Residential, Farm Or Commercial Gates