Made of Stainless Steel, tough and resistant to corrosion Screw type drain plug with a o-ring washer for positive sealing Retention system prevents plug from lost when removed Mounts in a 1inch/25mm diameter hole in hull The plugs prevent all water from intruding into the kayak and will keep you dry out on the water Great accessories for boat transoms, fish , ice chests, yacht and more Colour:silver Gasket color: 2: Orange Material:Stainless steel Size: 42mm Package Contents: 1 x Marine drain plug 2 x screw Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.