Material: Made of high quality 304 stainless steel and rubber, strong and durable Adjustable: Installed from inside the back plate, rotatable, fully adjustable and won't leak or wobble not under vibration Scope of application: suitable for 32mm holes, generally used for bottom tanks and stern plates of boom hulls Package includes: 1 x Drain Plug Size:32mm< /p> 304 Stainless Steel Handle Fixed Rubber Drain Plug Folding Style Hull And Stern Marine Accessories For Sea Vessels Silver feature: Material: Made of 304 stainless steel and rubber , strong and durable Easy to use cam style for airtight and long lasting seal Adjustable: Installed from inside the backplate, rotatable, fully adjustable and will not leak or wobble under vibration< /p> Fits 32 hole mm, typically used for bottom tanks, stern plates and boom hulls