Specification Brand : Service Caster BulletPoint1 : These Service Caster Series #20 Hard Rubber 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": 275 lbs Capacity/Caster; 3.5": 285 lbs Capacity/Caster; 4" and 5": 300 lbs Capacity/Caster BulletPoint3 : All casters feature a 7/8” x 2” square stem with (3) 17/64” diameter mounting holes. Don't see the size you need? No problem! Call us or message us by clicking the blue Service Caster Corporation hyperlink underneath the buy or add to cart button and then clicking the ask a question button. BulletPoint4 : Brake options include a top lock brake (TLB) or a total lock brake (TTL). The top lock brake (TLB), which is featured on 3", 3-1/2", 4", and 5" wheel sizes, places a positive locking force against the wheel tread locking the wheel only. The total lock brake (TTL), which is featured on all wheel sizes, 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 : Swivel - Top Lock Brake - Black ExternallyAssignedProductIdentifier1 : 011586605404 ExternallyAssignedProductIdentifier2 : 0011586605404 IncludedComponents : Caster Wheel ItemName : Swivel Square Stem Caster w/4” x 1.25” Black Hard Rubber Wheel – 7/8” x 2” Square Stem with (3) 17/64” Diameter Mounting Holes & Top Lock Brakes – 300 lbs. Capacity/Caster – Service Caster Brand ItemPackageDimensions_Height : 5 inches ItemPackageDimensions_Length : 5 inches ItemPackageDimensions_Width : 5 inches ItemPackageQuantity : 1 ItemTypeKeyword : stem-casters LoadCapacity : 300.0 pounds Manufacturer : Service Caster Material : Hard Rubber ModelNumber : Series #20 MountingType : Plate Mount NumberOfItems : 1 PartNumber : SCC-SQ20S414-HRS-TLB-78 ProductDescription : Listing is for one (1) Service Caster Series #20 swivel caster with a 4” diameter by 1-1/4” wide black hard rubber wheel and a 7/8" square stem with top lock brake capable of supporting 300lbs./caster. When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series 20 square stem hard rubber casters. The Service Caster Series 20 is ideal for light and medium duty material handling, carts, equipment, and shop projects. The hard rubber wheels not only provide higher load capacities and impact resistance than comparable wheels, but are also resistant to most chemicals and oils. The square stems are designed to be bolted or riveted onto the inside of angled iron legs or against any flat surface. All rolling on a finely crafted ball bearing design and zinc plated finish that provides durability under any condition and keeps you safely moving forward. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. ProductSiteLaunchDate : 2021-03-19T17:39:28.781Z Size : 4" Wheel - 7/8" Stem Style : 1 1/4 Inch SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface UnitCount : 4 UnspscCode : 31162702 WebsiteShippingWeight : 2.25 pounds