Specification Brand : Service Caster BulletPoint1 : These Service Caster Series #20 Polyurethane casters offer various wheel sizes and mounting heights: 3” Wheel: 4-1/8” mounting height; 3-1/2” wheel: 4-5/8” mounting height; 4” wheel: 5-1/8” mounting height; 5” wheel: 6-1/8” mounting height. BulletPoint2 : Weight Capacity: 3" and 3.5": 300 lbs Capacity/Caster; 4" and 5": 350 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). The top lock brake (TLB) places a positive locking force against the wheel tread locking the wheel only. 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 w/2 Brakes - Black ExternallyAssignedProductIdentifier : 9319715391701 ExternallyAssignedProductIdentifier1 : 0734005064049 ExternallyAssignedProductIdentifier2 : 734005064049 ItemName : Swivel Caster Set of 4 with 2 Brakes - 4 Inch Black Polyurethane Wheel – 350 lbs. Capacity Per Caster – 4 Inch x 4-1/2 Inch Overall Top Plate – Service Caster Brand ItemPackageQuantity : 1 ItemTypeKeyword : plate-casters LoadCapacity : 300.0 pounds Manufacturer : Service Caster Material : Polyurethane Tread on Polyolefin Core ModelName : Series #20 ModelNumber : Series #20 MountingType : Plate Mount NumberOfItems : 4 PartNumber : SCC-20S414-PPUB-BLK-TP3-2-TLB-2 ProductDescription : Listing is for a set of four (4) Service Caster Series #20 swivel casters, two (2) with top locking brakes, with 4" diameter by 1-1/4" wide black polyurethane wheels capable of supporting a total weight of 1,400 lbs. (350 lbs./caster). When searching for a reliable and durable solution to your caster needs, look no further than the Service Caster Series 20 top plate polyurethane casters. The Service Caster Series #20 is ideal for light and medium duty material handling, carts, equipment, and shop projects. The zinc plated finish provides durability under any condition, while the non-marking, non-marring polyurethane wheels perform especially well on hard surfaces such as concrete, tile, and wood- rolling on a finely crafted ball bearing design that keeps you moving forward. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. ProductSiteLaunchDate : 2021-10-26T20:38:39.343Z Size : 4" Wheel SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface UnitCount : 4 UnspscCode : 31162702 WebsiteShippingWeight : 8.1 pounds