Material: SteelFinish: GalvanizedGauge: 18Use With 4" X 4" Posts Or ColumnsOffers Dual-Purpose Post Cap/Base For Light Cap Or Base ConnectionsPost Bases Do Not Provide Adequate Resistance To Prevent Members From Rotating About The Base And Therefore Are Not Recommended For Non Top Supported Installations Such As Fences Or Unbraced CarportsGalvanized Coating To Resist Corrosion