Description Panel Clamps, or kennel clamps, are used to clamp two chain link fence panels together. If you have dog kennels, these clamps can also be used to attach two kennel panels together or make a kennel larger. Carriage Bolt And Nut Sold Separately. Fits Post And Rail Size 1 3/8" [1 3/8" Actual OD].Easy To Install Two-Piece ClampHigh-Quality Steel ConstructionRust-Resistant For Outdoor UseRequires Carriage Bolt For InstallationCan Be Used To Expand Dog KennelsUsed To Clamp Two Fence Sections TogetherDesigned To Hold Up To Two Dog Kennel PanelsFinish: GalvanizedMaterial: Pressed SteelRail Size: 1 3/8" [1 3/8" OD]Post Size: 1 3/8" [1 3/8" OD]Uses Carriage Bolt Size: 5/16" x 1 1/4"