Description: Press board size: Approx. 5.6 x 3.1 x 1.4 cm/ 2.2 x 1.2 x 0.55 inch Outside diameter of drain plug: Approx. 2.6 cm/ 1 inch Length of drain plug: Approx. 5.7 cm / 2.2 inch Stops water infiltration and is used to drain the water out of the inner hull of your boat Features an O-ring for positive sealing Fine threads maintain sealing under high vibration conditions Retention system keeps plug from getting lost when removed Great for boat transoms, fish wells, ice chests and more Materials: PP Color: Black Package Includes: 4 Pieces Kayak Drain Plugs 8 Pieces Screws