Specification Brand : Service Caster BulletPoint1 : These Service Caster Series #20 Stainless Steel 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. Wheels are offered in five different colors – Gray, Blue, Black, Maroon, and Red. BulletPoint2 : Weight Capacity: 3" and 3.5": 300 lbs Capacity/Caster; 4" and 5": 350 lbs Capacity/Caster BulletPoint3 : All casters feature a 1/2” diameter (13 TPI x 1-1/2”) threaded stem. Threaded stems can be difficult to measure. Service Caster recommends having existing threads checked on a thread gauge to determine correct thread size before ordering. 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) 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 w/2 Total Lock Brakes ExteriorFinish : Polished ExternallyAssignedProductIdentifier : 8347982337840 ExternallyAssignedProductIdentifier1 : 670533898438 ExternallyAssignedProductIdentifier2 : 0670533898438 ItemName : Stainless Steel Polyurethane Swivel Threaded Stem Caster Set of 4 w/3" x 1.25" Black Wheels and 1/2" Stems - Includes 2 with Total Locking Brake - 1200 lbs Total Capacity - Service Caster Brand ItemPackageDimensions_Height : 7 centimeters ItemPackageDimensions_Length : 8 centimeters ItemPackageDimensions_Width : 7 centimeters ItemPackageQuantity : 4 ItemTypeKeyword : stem-casters LoadCapacity : 250.0 pounds Manufacturer : Service Caster Material : Polyurethane Tread on Polyolefin Core Material1 : Rubber Material2 : Metal Material3 : Brass ModelNumber : Series #20 MountingType : Stem Mount NumberOfItems : 4 PartNumber : SCC-SSTSTTL20S314-PPUB-BLK-121315-2-S-2 Pattern : 125mm Dia ProductDescription : Listing is for a set of four (4) Service Caster Series #20 stainless steel casters, two (2) swivel 1/2"-13 X 1-1/2" threaded stem with total lock brake casters and two (2) swivel casters, with 3” diameter by 1-1/4” wide Black polyurethane wheels. Supports a total weight of 1,000lbs (250lbs/per caster).When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series 20 stainless steel threaded stem polyurethane casters. The Service Caster Series #20 is ideal for light and medium duty material handling, carts, equipment, and shop projects. The threaded stem is available in standard or metric sizes and ensures a solid and secure attachment. The polished stainless steel 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. All rolling via a finely crafted ball bearing design that will keep you moving forward. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. ProductSiteLaunchDate : 2019-05-03T18:14:59.732Z Size : 3" Wheel Style : 2-Pack SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface UnitCount : 4 UnspscCode : 31162702 WebsiteShippingWeight : 8 pounds