ITEM NAME:1/2" Hose Barb Cast Stainless Steel Barbed Marine Boat Thru Hull Fitting Description: - 1/2" Marine Boat Thru Hull Fitting - Marine-Grade 316 Stainless Steel - Corrosion resistance and durability in the saltwater environment. - Height: Approx. 57mm / 2.24 inch - Great accessories for boat/marine/yacht/kayak Specification: - Center hole diameter: Approx. 7mm Package Included: 1 Piece 1/2" Boat Thru Hull Fitting Note: 1. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm).Great accessories for boat/marine/yacht/kayak. - 1/2" Marine Boat Thru Hull Fitting. 1 Piece 1/2" Boat Thru Hull Fitting. - Marine-Grade 316 Stainless Steel.