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 : Silver Color2 : Black ExternallyAssignedProductIdentifier1 : 011586601833 ExternallyAssignedProductIdentifier2 : 0011586601833 ExternallyAssignedProductIdentifier3 : 00717076062947 FdaDeviceClassification : iv FdaIndicationOfUse : otc FdaInstructionsForUseType : consumer FdaLabelType : consumer IncludedComponents : Caster Sockets ItemName : Swivel Square Stem Caster Set 4 w/3” x 1.25” Blue 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 : 4.2 centimeters ItemPackageDimensions_Length : 20 centimeters ItemPackageDimensions_Width : 15 centimeters ItemPackageQuantity : 1 ItemShape : Conical ItemTypeKeyword : stem-casters LoadCapacity : 50 pound Manufacturer : Service Caster Material : Polyurethane Tread on Polyolefin Core Material1 : Polyurethane Material2 : Polyvinyl Chloride (PVC) Material3 : Steel ModelNumber : Series #20 MountingType : Stem Mount NumberOfBoxes : 1 NumberOfItems : 4 NumberOfPieces : 20 PackageLevel : unit PartNumber : SCC-SQ20S314-PPUB-BLUE-TLB-78-2-S-2 Pattern : 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” diameter by 1-1/4” wide blue 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 : 2021-03-15T13:38:45.972Z RecommendedUsesForProduct : Chair Size : 3" Wheel - 7/8" Stem StreetDate : 2017-03-12T00:00:01Z Style : 20PS SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface TemperatureRating : Ambient: 15 to 25 C (59 to 77 F) UnitCount : 4 WebsiteShippingWeight : 6.7 pounds