This kit has everything you need to mount your trailer's leaf springs to a 1-3/4" round axle. • (4) 4-1/4" Long U-bolts   • (2) U-Bolt plates for 1-3/4" leaf spring    • (8) 3/8 Hex nuts    Typically fits a 2,000lb axle.  Spring width: 1-3/4"  L=4-1/4"   A=1-3/4"   D=3/8"

» Spring seats on axle required for mounting axle to leaf spring sold separately.