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; 6” wheel: 7-1/8” 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", 5", and 6": 350 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 : 4 Swivel w/2 Top Lock Brakes Color1 : Black Color2 : Gold ExteriorFinish : Zinc Plated ExternallyAssignedProductIdentifier : 6946560054289 ExternallyAssignedProductIdentifier1 : 0011586601352 ExternallyAssignedProductIdentifier2 : 011586601352 IncludedComponents : No ItemName : Swivel Square Stem Caster Set 4 w/3.5” x 1.25” Black Poly Wheel - 7/8” x 2” Square Stem with (3) 17/64” Diameter Mounting Holes - Includes 2 Top Lock Brakes-1200lbs. Cpty/Caster - Service Caster Brand ItemPackageDimensions_Height : 13.0048 centimeters ItemPackageDimensions_Length : 4.3942 centimeters ItemPackageDimensions_Width : 8.1026 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : stem-casters LoadCapacity : 150 kg LoadIndex : 300 Manufacturer : Service Caster Material : Polyurethane Tread on Polyolefin Core Material1 : Rubber Material2 : Plastic ModelNumber : Series #20 MountingType : Plate Mount NumberOfItems : 4 PartNumber : SCC-SQ20S3514-PPUB-BLK-TLB-78-2-S-2 Pattern : 1-7/8" ID Tubing ProductDescription : Listing is for four (4) Service Caster Series #20 swivel casters, two (2) swivel & (2) swivel with top lock brakes, with a 3-1/2” diameter by 1-1/4” wide black poly wheels and a 7/8" square stem. Supports a total weight of 1,000lbs (250lbs/caster). When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series 20 square stem 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. 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 that keeps you moving forward. ProductSiteLaunchDate : 2021-03-12T19:38:56.185Z Size : 3.5" Wheel - 7/8" Stem Style : 3 Inch SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface UnitCount : 4 UnspscCode : 31162702 WebsiteShippingWeight : 7.1 pounds