Specification Brand : Service Caster BulletPoint1 : These Service Caster Series #20 Phenolic 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. BulletPoint2 : Weight Capacity: 3", 4", 5", and 6": 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, a total lock brake, or a posi lock brake. The top lock brake places a positive locking force against the wheel tread locking the wheel only. The total lock brake simultaneously locks the wheel and the swivel for a complete stationary position. The posi lock brake places a positive locking force against the wheel tread similar to the top lock brake, but the pedal is located above the wheel tread rather than on the side of the wheel. 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. BulletPoint6 : NOT compatible with: 0.75" diameter shelving poles/posts for model no. WEB930, WEB674, WEB675 1.0" diameter shelving poles/posts for model no. SHE24601B 1.5" diameter shelving poles/posts for model no. SHE99307ZB, SHE18308 Color : 4 Swivel w/2 Posi Lock Brakes CompatibleFastenerDescription : 1 inches DriveSystem : Square ExternallyAssignedProductIdentifier1 : 734005099522 ExternallyAssignedProductIdentifier2 : 0734005099522 GpsrSafetyAttestation : 1 IncludedComponents : wheel (4) ItemName : Phenolic Swivel Threaded Stem Caster Set of 4 w3.5" x 1.25" Black Wheels and 1/2" Stems - Includes 2 with Posi Locking Brake - 1200 lbs Total Capacity - Service Caster Brand ItemPackageDimensions_Height : 24.4094 centimeters ItemPackageDimensions_Length : 7.7978 centimeters ItemPackageDimensions_Width : 23.0886 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : stem-casters LoadCapacity : 500 pounds Manufacturer : Service Caster Material : Phenolic Material1 : plastic Material2 : plastic Material3 : plastic Material4 : plastic Material5 : plastic ModelName : Series #20 ModelNumber : Series #20 MountingType : Stem Mount NumberOfItems : 4 NumberOfPieces : 4 PackageLevel : unit PartNumber : SCC-TS20S3514-PHR-121315-2-PLB-2 ProductDescription : Listing is for a set of four (4) Service Caster Series #20 casters, two (2) swivel 1/2" threaded stem with brake casters and two (2) swivel casters, with 3-1/2 diameter by 1-1/4” wide phenolic wheels. Supports a total weight of 1,200lbs (300lbs/per caster). When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series 20 phenolic casters. The Service Caster Series #20 is ideal for light and medium duty material handling, carts, equipment, and shop projects. The phenolic wheels have a high resistance to impact damage while providing protection for floors in commercial and industrial settings. Phenolic wheels not only provide higher load capacities and impact resistance than comparable wheels, but are also resistant to most chemicals and oils. Mounting options include top plate, bolt hole and standard and metric threaded stem sizes. All rolling on a finely crafted ball bearing design and zinc plated finish that provides durability under any condition and keeps you safely moving forward. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward. ProductSiteLaunchDate : 2022-11-09T21:36:23.273Z Size : 3.5" Wheel Style : Shelving Wheels SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface UnitCount : 4 UnspscCode : 31162702 WebsiteShippingWeight : 5.9 pounds