These 2.5" wide weld-on leaf spring perches are CNC laser cut and formed from 1/4" mild steel and tumbled for a smooth finish. The are 2.5" wide and 6" long. There are 3 center pin holes so you can move your axle 1" forward or 1" back without moving your leaf springs. Cut to fit a 3.125" diameter axle tube, however, they will work fine on axle tubes from 3" to 4" with minor grinding. If you are moving the axle forward or back, you will need our matching 2.5" leaf spring plates. Made in the USA!