Material: Made of high-quality 304 stainless steel and rubber material, strong and durable. Adjustable: Installed from inside the transom, rotatable, fully adjustable, and will not leak or wobble under vibration. Scope: suitable for 1-inch holes, commonly used for bottom tanks and transoms on boom hulls. Package includes: 1 x Drain Plug 304 Stainless Steel Handle Solid Rubber Drain Plug Hull and Transom Style Foldable Hull Marine Accessories for Seagoing Vessels Silver Functionality: Material: Made of high-quality 304 stainless steel and rubber material, strong and durable. Easy-to-use cam style for an airtight and durable seal. Adjustable: Installed from inside the transom, rotatable, fully adjustable, and will not leak or wobble under vibration. Suitable for 1-inch holes, commonly used for bottom tanks, transoms, and boom hulls. Description: Product material: 304 Stainless Steel. Color: Silver. Weight: 40 grams. Range: 23MM-26MM. Volume: 100 40 30 mm. Packaging: OPP bag. Package includes: 1 drain plug.