This is a pair of 26 inch reverse curve spring with 3 leafs and is rated to 1,750lbs. This would bring a pair of these springs to 3,500 pounds. These are common on 3,500lb trailer axles. The spring is 1 3/4 inch wide, and measures 26 1/4 from center of front eye to the end of the rear curve; if your springs measure slightly longer than 26 inches that is normal, springs can flatten out over time and measure slightly longer than what they did when they were new.