Specification Brand : Caplugs BulletPoint : Manufacturer part number 12314610631 BulletPoint1 : Fits tubing with outside diameter of 5/8". Inside dimension can be varied. BulletPoint2 : Heavy duty plug for outdoor use BulletPoint3 : Side fins allow for smooth installation and snug fit BulletPoint4 : Set of 4 BulletPoint5 : [Installation] - It is easy to use and does not require any tools. You can manually install it in a few minutes. ExternallyAssignedProductIdentifier : 4883943141742 ExternallyAssignedProductIdentifier1 : 0663151364171 ExternallyAssignedProductIdentifier2 : 663151364171 ItemDisplayDimensions_Length : 3 inches ItemDisplayDimensions_Width : 3 inches ItemName : 5/8" Black Plastic Plugs for Square Tubing by Caplugs Package of 4 ItemPackageDimensions_Height : 0.2 inches ItemPackageDimensions_Length : 7 inches ItemPackageDimensions_Width : 5 inches ItemPackageQuantity : 4 ItemTypeKeyword : hardware-biscuits Manufacturer : Caplugs Material : Plastic ModelNumber : 12314610631 NumberOfItems : 1 PartNumber : 12314610631 ProductDescription : Series SQR Square Plugs feature a series of externally tapered ribs designed to accommodate a wide range of tubing gauges while also satisfying the fit adjustments on tubing with inside dimensional fluctuations. The exterior ribs are designed to provide a sure grip inside a tube without the unsightly plastic shavings found on many straight wall glide installations. Not subject to rust or corrosion. Low-Density Polyethylene ProductSiteLaunchDate : 2014-06-20T07:00:00.000Z Size : 3 Inch SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 40141700