Specification AutomotiveFitType : universal_fit Brand : Sturdy Built BulletPoint1 : JADODE 3500 lbs Trailer Leaf Springs, Two 4 Leaf 25-1/4" x 1-3/4" Trailer Double Eye Spring Trailer Axles, 1,750 lbs Capacity Per Each Spring BulletPoint2 : 9/16" Inner Diameter Bushings Includes(Eye Diameter Without Bushing: 11/16")2 Bushings Installed for Each Spring, Leaf thickness: 5/16" BulletPoint3 : JADODE Trailer Double Eye Spring Replaces For : SW4B, UNA-108, SW-4B, 72-42(072-042-00), 93168, UNA-157, 4342-17, 8103, PR-4B, 93184 BulletPoint4 : Also Note That Spring Capacity Trailer Leaf Springs Is Calculated On a Per Spring Basis, So This Axle Rated at 3,500 lbs. Should Be Two Springs With A Load Of 1,750 lbs. Or Higher BulletPoint5 : 9/16" Double Eye Trailer Leaf Springs Nylon Bushing Included In Both Eyes,The Inside Diameter Of The Spring Hook Bushings Must Match The Holes In The Eyebolts And Spring Hangers Used To Mount Spring Color : black CompatibilityOptions : 3500 lb trailer leaf springs CompatibleWithVehicleType : Trailer ExternallyAssignedProductIdentifier : 00810067321983 ExternallyAssignedProductIdentifier1 : 0795276630920 ExternallyAssignedProductIdentifier2 : 795276630920 FitType : Universal Fit IncludedComponents : Replacement Parts - Underhood;Powertrain/Drivetrain/Axles;automotive-axle-bearings. ItemName : Sturdy Built (Pair) 2 3/8 inch Round Axle Spring Seat ItemPackageDimensions_Height : 71.12 centimeters ItemPackageDimensions_Length : 15.24 centimeters ItemPackageDimensions_Width : 15.24 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : trailer-springs Manufacturer : Sturdy Built Material : Raw steel Material1 : Nylon Material2 : steel ModelName : SW4B ModelNumber : RBT-SW4BX2 NumberOfBoxes : 1 NumberOfItems : 1 OeManufacturer : SW4B, UNA-108, SW-4B, 72-42(072-042-00), 93168, UNA-157, 4342-17, 8103, PR-4B, 93184 OemEquivalentPartNumber1 : 072-25 OemEquivalentPartNumber2 : SW4 PartNumber : 24857 PartTypeId : 7544 ProductDescription : Trailer axle spring seat (price is for 2 perches)Spring perch fits round trailer axlesFits 2 3/8" diameter round axlesFits 3500 lb capacity axlesRaw steelWeld-on installation ProductSiteLaunchDate : 2022-07-15T19:27:13.282Z Size : 3500 lb trailer leaf springs Style : Standard Kit SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 26111500 WarrantyDescription : Manufacturer Warranty