Specification Brand : Service Caster BulletPoint1 : These Service Caster Series #20 Thermoplastic 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; 6” wheel: 7-1/8” mounting height. BulletPoint2 : Weight Capacity: 3": 210 lbs Capacity/Caster, 3.5": 230 lbs Capacity/Caster, 4": 250 lbs Capacity/Caster, and 5" & 6": 300 lbs Capacity/Caster BulletPoint3 : All casters feature a 12mm diameter (1.75 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 posi lock brake (PLB) or a total lock brake (TTL). The posi lock brake (PLB) 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 - Total Lock Brakes - Gray ExternallyAssignedProductIdentifier1 : 0734005086959 ExternallyAssignedProductIdentifier2 : 734005086959 IncludedComponents : Wheel-Nut ItemName : Thermoplastic Rubber Swivel Threaded Stem Caster Set of 4 w/3" x 1.25" Gray Wheels and 12mm Stems - Includes 4 with Total Lock Brakes - 840 lbs Total Capacity - Service Caster Brand ItemPackageDimensions_Height : 1.96 inches ItemPackageDimensions_Length : 8.85 inches ItemPackageDimensions_Width : 2.83 inches ItemPackageQuantity : 4 ItemTypeKeyword : stem-casters LoadCapacity : 210.0 pounds Manufacturer : Service Caster Material : Thermoplastic Rubber Tread on Polyolefin Core Material1 : Acrylonitrile Butadiene Styrene (ABS) Material2 : Rubber Material3 : Steel ModelNumber : Series #20 MountingType : Stem Mount NumberOfItems : 4 PartNumber : SCC-TSTTL20S314-TPRB-M1215-4 ProductDescription : Listing is for a set of four (4) Service Caster Series #20 swivel casters, four (4) swivel 12mm threaded stem casters with total lock brakes, 3” diameter by 1-1/4” wide thermoplastic rubber wheels. Supports a total weight of 840lbs (210lbs/per caster). When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series 20 thermoplastic rubber 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, and the soft, quiet and non-marking thermoplastic rubber wheels perform especially well on hard surfaces such as concrete, tile, and wood. They are resistant to water, oil, and grease and will keep you safely moving forward. Mounting options include top plate, bolt hole and standard and metric threaded stem sizes. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. ProductSiteLaunchDate : 2020-08-05T15:54:53.549Z Size : 3" Wheel Style : M8x15mm SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface UnitCount : 4 UnspscCode : 31162702 WebsiteShippingWeight : 6 pounds