19mm:Description:Material: Made of 304 stainless steel or brass and rubber. Durable, corrosion resistant. Easy to use: Cam type marine drain plugs for tight and long-lasting sealing. Installation: The drain plug is installed from the inside of the beam, the torque is fully adjustable and will not leak or come loose under vibration. Suitable apply to: usually use for boat transom bilge seawall baitwell Livewell hull. Twist twist: fully adjustable will not leak or jar loose under vibration. Specification: Item type: boat drain plug Material: brass + 304 stainless steel + rubber Size table: 19MM/0.75 inch25MM/0.98 inch32MM/1.26 inch Package includes: 1 piece boat drain plug 25mm-1: Description: Material: Made of 304 stainless steel or brass and rubber. Durable, corrosion resistant. Easy to use: Cam type marine drain plugs for tight and long-lasting sealing. Installation: The drain plug is installed from the inside of the beam, the torque is fully adjustable and will not leak or come loose under vibration. Suitable apply to: usually use for boat transom bilge seawall baitwell Livewell hull. Twist twist: fully adjustable will not leak or jar loose under vibration. Specification: Item type: boat drain plug Material: brass + 304 stainless steel + rubber Size table: 19MM/0.75 inch25MM/0.98 inch32MM/1.26 inch Package includes: 1 piece boat drain plug 32mm: Description: Material: Made of 304 stainless steel or brass and rubber. Durable, corrosion resistant. Easy to use: Cam type marine drain plugs for tight and long-lasting sealing. Installation: The drain plug is installed from the inside of the beam, the torque is fully adjustable and will not leak or come loose under vibration. Suitable apply to: usually use for boat transom bilge seawall baitwell Livewell hull. Twist twist: fully adjustable will not leak or jar loose under vibration. Specification: Item type: boat drain plug Material: brass + 304 stainless steel + rubber Size table: 19MM/0.75 inch25MM/0.98 inch32MM/1.26 inch Package includes: 1 piece boat drain plug