This Redline 1/2" x 3" x 7" Round U-bolts with Nuts typically fits a 5,200-lb to 7000-lb axle with a 1-3/4" or 2" spring width.

These Redline 9/16" x 3" x 7-1/4" Round U-bolts and Nuts typically fit a 5,200-lb to 7000-lb axle with a 1-3/4" or 2" spring width.

This Redline 9/16" x 3-1/2" x 8" Round U-bolts and Nuts typically fits a 8,000-lb axle with a 2" spring width.

These Redline 1/2" x 1-1/2" x 5" Square U-bolts and Nuts are typically used for 3,500-lb axles, measure 1-1/2" wide from inside to inside.

These Redline 9/16" x 1-3/4" x 5" Square U-bolts and Nuts measure 1-3/4" wide from inside to inside with 18 threads per inch.

This Redline 9/16" x 2" x 5-3/4" Square U-bolts with Nuts measure 2" wide from inside to inside and includes 2 u-bolts, 4 nuts.

These Redline 9/16" x 3" Shackle, Spring Eye Bolts and Nuts attach leaf spring to the hangers or equalizers, used with 1-3/4" wide springs.