Specification Brand : Service Caster BulletPoint1 : These Service Caster Series #20 Nylon casters offer various wheel sizes and mounting heights: 3” Wheel: 4-1/8” mounting height; 4” wheel: 5-1/8” mounting height; 5” wheel: 6-1/8” mounting height. BulletPoint2 : Weight Capacity: 3", 4" and 5": 300 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 : Swivel - Total Lock Brake - White ExternallyAssignedProductIdentifier1 : 670533913025 ExternallyAssignedProductIdentifier2 : 0670533913025 ItemName : Stainless Steel Nylon Swivel Threaded Stem Caster w/4" x 1.25" White Wheel and 1/2" Stem & Total Locking Brake - 300 lbs Capacity/Caster - Service Caster Brand ItemPackageQuantity : 1 ItemTypeKeyword : stem-casters LoadCapacity : 300.0 pounds Manufacturer : Service Caster Material : Nylon ModelNumber : Series #20 MountingType : Stem Mount NumberOfItems : 1 PartNumber : SCC-SSTSTTL20S414-NYS-121315 ProductDescription : Listing is for one (1) Service Caster Series #20 stainless steel swivel caster with a 4" diameter by 1-1/4" wide nylon wheel and a 1/2" threaded stem with total lock brake capable of supporting 300 lbs./caster.When searching for a reliable and durable solution to your caster needs, consider Service Caster Series 20 threaded stem nylon wheel 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 nylon wheels provide very low rolling resistance, show a high resistance to many aggressive substances, and are maintenance free under normal operating conditions. Not only are they resistant to most chemicals and oils, but they will be sure to keep you safely moving forward. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. ProductSiteLaunchDate : 2019-07-31T20:34:29.151Z Size : 4" Wheel SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface