Specification AutomotiveFitType : universal_fit Brand : WCP BulletPoint : Flat free, no maintenance. BulletPoint1 : These Service Caster Series #20 High Temperature Phenolic casters offer various wheel sizes and mounting heights: 3” Wheel: 4-1/8” mounting height; 4” wheel: 5-1/8” mounting height; 5” wheel: 6-1/8” mounting height; 6" wheel: 7-1/8" mounting height. BulletPoint2 : Weight Capacity: 3", 4", 5", and 6": 300 lbs Capacity/Caster BulletPoint3 : Top plate measures at 2-1/2" x 3-5/8" with a bolt hole pattern of 1-3/4" x 2-7/8" to 3" and can either be bolted or welded on. BulletPoint4 : Brake options include a top lock brake (TLB) or a total lock brake (TTL). The top lock brake (TLB) places a positive locking force against the wheel tread locking the wheel only. The total lock brake (TTL) also places a positive locking force against the wheel tread, but the total lock brake (TTL) simultaneously locks the wheel and the swivel for a complete stationary position. BulletPoint5 : Find other wheel materials, sizes and all Service Caster products at our Amazon Storefront. Click on the “by Service Caster” link above the main title on any Service Caster page listing. Capacity : 1200 pounds Color : 4 Swivel - No Brakes - Brown CompatibleWithVehicleType : Wheelchair ConstructionType : Injection Molded ExteriorFinish : Titanium ExternallyAssignedProductIdentifier1 : 687051910290 ExternallyAssignedProductIdentifier2 : 0687051910290 HoleCount : 1 IncludedComponents : Bearings ItemName : SET OF 2 PRIMO CASTER WHEELS. WHEEL SIZES: 4", 5" AND 6" (4" X 1") ItemPackageDimensions_Height : 0.1 inches ItemPackageDimensions_Length : 0.3 inches ItemPackageDimensions_Width : 0.2 inches ItemPackageQuantity : 4 ItemTypeKeyword : plate-casters LoadCapacity : 125 Pounds LoadIndex : 0.03 Manufacturer : WCP Material : Metal Material1 : Plastic Material2 : Metal MaximumWeightRecommendation : 125 pounds ModelName : SSe ModelNumber : Series #20 MountingType : Plate Mount NumberOfItems : 4 OemEquivalentPartNumber : YWBL-WH04ogg7uenk PartNumber : C PitchCircleDiameter : 0.01 inches ProductDescription : These caster wheels fit on Quickie manual wheelchair but also other wheelchairs like Ki-Mobility, Invacare and others. They all come with 5/16" precision bearings and 1" center hub. The tire is made with a high performance soft roll material. ProductSiteLaunchDate : 2020-07-30T13:46:51.425Z Size : 4" X 1" SpecificUsesForProduct : Wheelchairs SpeedRating : L SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Multi-Surface UnitCount : 2 UnspscCode : 31162702 WarrantyDescription : 30 WebsiteShippingWeight : 2 pounds