Features 【Draining Plug】: Garboard drainer with removable plug can easily drain the bottom tank when the ship is ashore. 【re Sealing】: Tapered pipe thread with rubber O ring ensures tight and re sealing under high vibration. 【Good Material】: Adopting 316 stainless steel, which is not easy to rust with high hardness and high strength. 【Great Crafting】: Mirror polished surface is smooth without burrs, does not hurt your hand and also very durable. 【Easy to Install】: Small size, light weight and deep thread enable easy installation to be finished in minutes. Feature: 1. Garboard drainer with removable plug can easily drain the bottom tank when the ship is ashore. 2. Tapered pipe thread with rubber O ring ensures tight and re sealing under high vibration. 3. Adopting 316 stainless steel, which is not easy to rust with high hardness and high strength. 4. Mirror polished surface is smooth without burrs, does not hurt your hand and also very durable. 5. Small size, light weight and deep thread enable easy installation to be finished in minutes. Specification: Item Type: Garboard Drain Plug Material: 316 Stainless Steel Function: The ship board drainer with detachable stopper can drain the bottom tank when the ship is towed out of the water. Drain Size: 25mm (1in) Outer Ring Diameter: Approx. 50mm / 1.97in Positioning Hole Diameter: Approx. Φ4mm / 0.16in Package List: 1 x Garboard Drain Plug Note: Please perform regular maintenance and inspection for rust when working at sea. Package List 1 x Garboard Drain Plug