Product details:

Replacement trailer springs: heavy duty spring steel Includes 9/16"ID nylon bushings Two springs in a full color box Flat end slipper springs are 30" L x 4-7/8" H, Arch length 28" L. Two leave springs have a capacity of 1,000lbs/spring, Four leave springs are 1,850lbs/spring. Heavy duty spring steel. Includes 9/16" ID nylon bushings. Two springs in a full color box. 1,000 lb. capacity per spring.