3,500 lb Idler Trailer Axle with Double Eye Springs and U-Bolts ( 73" Hub Face, 58" Spring Center ) 5 Lug on 4.5 Bolt Pattern Rockwell American 3,500 lb Idler Axle - Running Gear Set - Made in the USA This Axle Kit Includes: (1) Idler Axle with Hubs, Bearings, Lugs & Nuts, (2) Double Eye Springs, (1) U-bolt Kit, (1) 32 oz Johnson Trailer Parts Insulated Mug This Axle Comes with a Superior Powder Coated Finish and Posi-Lube Spindles that Provide Continuous Bearing Protection 5 Lug on 4.5 Bolt Pattern (other bolt patterns available - Contact Johnson Trailer Parts) Replaces Dexter, Al-ko & TK Trailer Axles. This Axle Kit is Available in the Sizes Shown in the 3rd Picture - Search "Johnson Trailer Parts or Rockwell American" in Amazon Search Bar for more Trailer Parts