Specification Brand : Service Caster BulletPoint : Ball 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 an expanding stem that is 2-11/16” in length. The expanding stem comes in 10 different diameters: (3/4”, 7/8”, 1”, 1-1/8”, 1-1/4”, 1-3/8”, 1-1/2”, 1-5/8”, 1-3/4”, and 1-7/8”). Before ordering, Service Caster recommends measuring the inside diameter of your tubing- this measurement will determine the corresponding expanding stem diameter needed. Not sure how to measure or don't see the size you need? Call us or send us a message. 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. Color : Swivel - No Brake - 1-1/2" Stem ExternallyAssignedProductIdentifier1 : 670533859705 ExternallyAssignedProductIdentifier2 : 0670533859705 IncludedComponents : wheel ItemName : Stainless Steel Hard Rubber Swivel Expanding Stem Caster w/4" x 1.25" Black Wheel and 1-1/2" Stem - 300 lbs Capacity/Caster - Service Caster Brand ItemPackageDimensions_Height : 13.8938 centimeters ItemPackageDimensions_Length : 2.5908 centimeters ItemPackageDimensions_Width : 10.2108 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : stem-casters LoadCapacity : 300.0 pounds Manufacturer : Service Caster Material : Hard Rubber Material1 : Acrylonitrile Butadiene Styrene Material2 : Stainless Steel Material3 : Steel ModelNumber : Series #20 MountingType : Stem Mount NumberOfItems : 1 PartNumber : SCC-SSEX20S414-HRS-MTG46 Pattern : Black ProductDescription : Listing is for one (1) Service Caster Series #20 1-1/2" expanding stem stainless steel swivel caster with a 4" diameter by 1-1/4" wide black hard rubber wheel capable of supporting 300 lbs./caster. When searching for a reliable and durable solution to your caster needs, look no further than the Service Caster Series 20 expanding stem hard rubber wheel casters. The Series #20 features an innovative expanding stem that can easily adapt to the inside diameter of the opening, allowing for a secure fit in round or square tubes. Simply tighten the topmost knurled nut to compress the rubber for a snug fit. For added security, further compress the rubber with a wrench via the nut under the swivel raceway. Finely crafted with a bright zinc plated finish, heat-treated ball bearing raceway, and a hard rubber wheel, this versatile caster is ideal for work tables, shop projects, or any equipment with round or square tube legs. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. ProductSiteLaunchDate : 2023-12-15T13:38:44.198Z Size : 4" Wheel Style : fashion SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurfaceRecommendation : Multi-Surface UnitCount : 4 UnspscCode : 31162702 WebsiteShippingWeight : 2.15 pounds