ITEM NAME:316 Stainless Steel Boat Thru Hull Fitting 1" Hose Barb Marine Hardware Description: 1" Marine Boat Thru Hull Fitting Marine-Grade 316 Stainless Steel Corrosion resistance and durability in the saltwater environment. Height: Approx. 72mm / 2.83 inch Great accessories for boat/marine/yacht/kayak Specification: Center hole diameter: Approx. 23mm / 0.9inch Package Includes: 1 Piece 1" 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" Marine Boat Thru Hull Fitting. 1 Piece 1" Boat Thru Hull Fitting. Marine-Grade 316 Stainless Steel.