Specification Brand : Sturdy Built BulletPoint1 : The Included U Bolts fit around a 2 inch wide by 3 inch tall cross member. The U Bolts measure 1/2" in diameter, 3" wide, by 3 5/16" long. BulletPoint2 : This Swivel Top style bunk bracket is the industry standard 10" height with slotted holes for multiple height adjustments BulletPoint3 : The Adjustable Swivel Top Brackets in this kit are larger than your typical swivel top brackets in order to match the Heavy Duty Brackets that they mount to. However these tops still swivel just the same, allowing you to contour your bunk boards perfectly to the shape of your boats hull; whether angled or flat. BulletPoint4 : Hot Dipped Galvanized .250" Metal Construction... FASTENERS NOT INCLUDED... BulletPoint5 : Other Brackets and Sizes Available... Color : Silver CompatibleWithVehicleType : Trailer ExteriorFinish : Smooth ExternallyAssignedProductIdentifier : 6521515430655 ExternallyAssignedProductIdentifier1 : 0680140852709 ExternallyAssignedProductIdentifier2 : 680140852709 FabricType : Vinyl FitType : Universal Fit GpsrSafetyAttestation : 1 IncludedComponents : C.H. Yates 1200Y Yellow Plastic Heavy Duty 'V' Keel Roller - 12 in. x 0.625 in. ItemDepth : 10 inches ItemDisplayWeight : 2.2 pounds ItemName : Sturdy Built (4) 10" Galvanized Double U Bolt Swivel Top Bunk Bracket Kit for 2x3 Boat Trailer Crossmember ItemPackageDimensions_Height : 30.9118 centimeters ItemPackageDimensions_Length : 8.4074 centimeters ItemPackageDimensions_Width : 11.5062 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : boat-trailer-guides-and-rollers Manufacturer : Sturdy Built Material : Zinc Plated Material1 : Zinc Material2 : Zinc Plated ModelName : 1200Y ModelNumber : 5d57a7b5-87c3-462e-bb62-10d95838eada MountingType : Wall Mount NumberOfBoxes : 1 NumberOfItems : 1 OperationMode : Manual PackageLevel : unit PartNumber : 25809-4 Pattern : Solid PowerSourceType : manual ProductDescription : When looking for the best, get something Sturdy Built. Ideal for saltwater or freshwater use, this galvanized kit contains everything you need to mount your bunk boards (not included). These bunk brackets mount with the flat surface facing your boat trailers cross braces. The galvanized u bolts wrap around the brace, and the washers and nut secure the bracket in place. The slotted holes in the bunk support allow for height adjustment. Includes: swivel top brackets, slotted bunk brackets, zinc plated bunk bracket bolts, galvanized mounting U-bolts for the brackets and galvanized lag screws to secure boat trailer bunk boards. ProductSiteLaunchDate : 2019-02-01T06:23:34.968Z RequiredProductComplianceCertificate : California Air Review Board (CARB) Size : 79"-86.9" StreetDate : 2016-03-01T00:00:01Z Style : Modern SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable UnitCount : 4 UnspscCode : 31161500