Place a strut channel accessory made of neoprene known as a superstrut channel safety end cap at the end of channel systems or electrical raceways for extra protection. Here is some additional information about Zoro Select Channel Post Base. Material: Steel, Width: 6", Color: Silver.FeaturesFinish: Electro GalvanizedLength: 6"Includes: 3/4" Mounting HolesWidth: 6"Color: SilverMaterial: SteelItem: Channel Post BaseDepth: 3-1/2"Sub-Category: Fittings and Brackets