XIAANQI Description Material: Made of high quality 304 stainless steel and rubber material, strong and durable Adjustable: Installed from inside the backplate, rotatable, fully adjustable and won't leak or wobble under vibration Scope: suitable for 25mm holes, typically used for bottom tanks and stern plates of boom hulls Package includes: 1 x drain plug Size: 25mm 304 stainless steel handle fixed rubber drain plug hull and stern style folding hull marine accessories for seagoing vessels silver