This AP Products Six Leaf Spring Equalizer is designed for a 7-3/4 inch wide double-eye leaf spring on a dual or triple axle trailer. Specifications•Compatibility: 7-3/4 Inch Wide Double-Eye Leaf Spring•Type: Triangular Rocker Type Arm•Axle Type: Dual/ Triple Axle•Installation Type: Bolt-On•With Mounting Hardware: Yes Tandem Axle Bronze Bushing