Specification Brand : Service Caster BulletPoint1 : These Service Caster Series #30 Thermoplastic Rubber Flat Tread on Polyolefin Core casters offer various wheel sizes and mounting heights: 4” wheel: 5-5/8” mounting height; 5” wheel: 6-1/2” mounting height; 6” wheel: 7-1/2” mounting height; 8” wheel: 9-1/2” mounting height. BulletPoint2 : Weight Capacity: 4": 300 lbs Capacity/Caster, 5": 350 lbs Capacity/Caster, 6": 500 lbs. Capacity/Caster, and 8": 600 lbs Capacity/Caster BulletPoint3 : Top plate measures at 4" x 4-1/2" with a bolt hole pattern of 2-5/8" x 3-5/8" to 3" x 3" and can either be bolted or welded on. BulletPoint4 : Brake options include a top lock brake (TLB) and 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. Color : 4 Swivel - Brakes & Bolt on Swivel Locks - Gray CompatibleWithVehicleType : Truck ExternallyAssignedProductIdentifier1 : 840166540800 ExternallyAssignedProductIdentifier2 : 0840166540800 IncludedComponents : Universal Wheel ItemName : Thermoplastic Rubber Flat Tread Swivel Top Plate Casters Set of 4 Heavy Duty with 4 Inch Wheels- Includes 4 Swivel with Top Lock Brakes and Swivel Locks–1,200 lbs. Total Capacity- Service Caster Brand ItemPackageDimensions_Height : 10 inches ItemPackageDimensions_Length : 17 inches ItemPackageDimensions_Width : 20 inches ItemPackageQuantity : 4 ItemShape : Round ItemTypeKeyword : plate-casters LoadCapacity : 300.0 pounds Manufacturer : Service Caster Material : Thermoplastic Rubber Tread on Polyolefin Core ModelName : Series #30 ModelNumber : Series #30 MountingType : Adhesive Mount NumberOfItems : 4 PartNumber : SCC-30CS420-TPRRF-TLB-BSL-4 ProductDescription : Listing is for a set of four (4) Service Caster Series #30 swivel casters with 4" diameter by 2" wide thermoplastic rubber flat tread wheels with top lock brakes and bolt on swivel locks capable of supporting a total weight of 1,200 lbs. (300 lbs. per caster). When searching for a reliable and durable solution for medium and heavy duty projects, consider Service Caster’s Series 30 top plate thermoplastic rubber flat tread on polyolefin core casters. The soft flat tread is made of thermoplastic rubber that is non-marking and non-marring, and on the polyolefin core provides a long lasting, high capacity wheel that is capable of easy rolling under heavy loads. Finely crafted with double ball bearing heat treated raceways, these versatile casters are ideal for a wide range of applications, such as dollies, platform trucks, warehouse carts and freight terminals. Or ensure a smooth and secure ride for food service carts, hotel housekeeping carts, and industrial and commercial equipment. Even drywall carts, welding carts, and wall panel carts will be ready to roll on the Series 30, keeping you moving forward. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. ProductSiteLaunchDate : 2020-08-24T20:14:36.335Z Size : 4" Wheel Style : Spring Loaded Swivel SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Multi-Surface UnitCount : 4 UnspscCode : 31162702 WebsiteShippingWeight : 20 pounds