(Two) TALL Center Equalizer.
Part Number: EQ-310.
Three 9/16" holes (uses all 9/16 bolts).
Bottom bolt holes are 6" center to center, top hole is 4" above bottom holes.
Fits 1- 3/4" wide Springs (used on 2,000#, 3,500#, 5,200#, 6,000# and 7,000# Axles)