3,500 lbs. Greaseable Trailer Axle Suspension Kit Incl. Leaf Springs, Hanger & U-Bolt kit This suspension kit is for a single trailer axle Fits Dexter Axles This kit includes: 2 x 4 leaf 25 1/4" double eye spring 1750 lbs each. 1 3/4" wide and will accept a 9/16" shackle bolt. Nylon bushings are included. 1 x 2 3/8" round axle U-Bolt kit, bolt length 5 1/2", 1/2" diameter, for 1 3/4" spring 1 x Single hanger kit for 3,500 lb axle using double eye springs U-Bolts Torque (ft. lbs.) minimum 45 maximum 60. Spring Eye Bolts Torque (ft. lbs.) minimum 110 maximum 114. Includes 7/16" Wet bolts & hex lock nuts.