"When using one axle, order two springs to the correct capacity and one shackle set. With tandem axles, order 4 correct capacity springs and one tandem axle shackle set. Sold individually. Spring Capacity Per Pair lbs. 2,000, Springs Included qty. 1, Spring Type Leaf Trailer Spring. 3 leaves 27in. eye center 1 3/4in. wide springs with 9/16in. double eyelets Sold individually"