Specification Brand : Oajen BulletPoint1 : Oajen 2" 50mm black SOFT wheel caster. Make sure you pick the correct stem for your application. BulletPoint2 : U bracket is a little wider to accommodate laminate. Bolt goes into non threaded hole first. Pack of 4. BulletPoint3 : 2 with and 2 without brake. BulletPoint4 : 90 lbs rating each. 2-9/16" mounting height. BulletPoint5 : Made in Taiwan. Color : Black ItemName : Oajen 2" 50mm black soft wheel caster, use on hardwood floor or concrete, 2 with and 2 without brake, 1" U bracket ItemTypeKeyword : stem-casters LoadCapacity : 90.0 pounds Manufacturer : Oajen Material : Nylon NumberOfItems : 4 PartNumber : ALP5001H+2 ProductDescription : Oajen 2" 50mm black soft wheel caster, use on hardwood floor or concrete, 2 with and 2 without brake, 1" U bracket ProductSiteLaunchDate : 2018-03-02T18:37:31.703Z Style : 1" U bracket SurfaceRecommendation : Multi-Surface UnitCount : 4