Square spring seats (or spring perches) are set onto axle tubes to allow your leaf springs to sit flat on the axle without having to drill spring bolt holes.
2 seats per axle required.
Fits 1.5" tubing axles.
The seats do not need to be welded onto the axle. To properly use these seats, you need to place the seat on the beam of the axle so the legs of the seat sit on each side of the axle tube. Set your leaf springs on top of these seats and then bolt them securely with a u-bolts and axle plates.