Description:Adopting o-ring design with fine thread, it can maintain positive sealing under high vibration conditions. The retention system keeps plug from getting lost when removed.What the drain plug can offer is that can prevent water infiltration and is used to drain the water out of the inner hull of your boat.Made of plastic material, the product is durable and has a long service life.The length of the product is 5.6cm, the width is 5.44cm, and the height is 3.13cm.It is suitable for all kinds of kayaking, canoeing or fishing places.Item Name: Drain PlugsMaterial: ABSColour: BlackSpecification: 4PcsFeatures: Good Sealing, Durable, Easy to InstallSize Details: 56mm x 54.4mm x 31.3mm/2.20" x 2.14" x 1.23" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:4 x Drain Plugs8 x Screws