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; 6" wheel: 7-1/8" mounting height. BulletPoint2 : Weight Capacity: 3",3.5", 4", 5", and 6": 300 lbs Capacity/Caster BulletPoint3 : All casters feature a 7/16” diameter by 1-3/8” long grip ring stem. Service Caster recommends using a drill or hardware gauge, a 7/16” wrench, or our paper wrap method to ensure the grip ring stem diameter needed is 7/16”. Paper Wrap Method: take a small strip of paper and wrap it around the stem. Mark the paper with a pen where it overlaps, keep the wrap tight. Measure the strip from the start of the wrap to the mark. The ruler should measure 1-3/8". Don’t see the size you need? Call us! 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. Color : 4 Swivel w/2 Total Lock Brakes ExternallyAssignedProductIdentifier : 5023592623353 ExternallyAssignedProductIdentifier1 : 734005090697 ExternallyAssignedProductIdentifier2 : 0734005090697 ItemName : Phenolic Swivel Grip Ring Stem Caster Set of 4-3" x 1.25" Black Wheels and 7/16" Stems - Includes 2 with Total Locking Brake - 1200 lbs Total Capacity - Service Caster Brand ItemPackageDimensions_Height : 3 inches ItemPackageDimensions_Length : 5 inches ItemPackageDimensions_Width : 3 inches ItemPackageQuantity : 1 ItemTypeKeyword : stem-casters LoadCapacity : 300.0 pounds Manufacturer : Service Caster Material : Iron Material1 : Phenolic Material2 : Phenolic Material3 : Phenolic Material4 : Phenolic Material5 : Phenolic ModelNumber : Series #20 MountingType : Plate Mount NumberOfItems : 4 PartNumber : SCC-GRTTL20S314-PHS-716138-2-S-2 ProductDescription : Listing is for a set of four (4) Service Caster Series #20 casters, two (2) swivel 7/16" grip ring stem with total lock brake casters and two (2) swivel casters, with 3” 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, grip ring stem, 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 : 2022-09-27T19:41:52.141Z Size : 3" Wheel SupplierDeclaredDgHzRegulation : not_applicable SurfaceRecommendation : Multi-Surface UnitCount : 4 WebsiteShippingWeight : 5.7 pounds