Sea-Dog Bimini-Canopy Top Chrome 7/8" External Eye EndThese Sea Dog Bimini Top Caps are constructed of chrome plated die cast zinc and are recommended for freshwater use. For use with 7/8" OD stainless tubing with a wall thickness of.049". Die Cast Zinc Chrome Plated; Stainless Tube Wall Thickness .049; Sold in Pairs; Dimensions: Tube O.D. 7/8"; Pin Size 1/4";