▲Product features： 1.Made of marine grade 100% aluminium , withstand harsh marine conditions , for longer service time. 2.Built-in white rubber insert to protect your fishing rod from any wear against the aluminium surface. 3.Easy to install,direct replacement for the old or broken one. ▲Product description: 1.Material: Made of 100% aluminium 2.Color: Silver 3.Size:Inside diameter of rod holder tube is 45mm;Outer diameter tube is 54mm;Length is 250mm.(Please refer to the picture for the specific size) ▲Package Includes: 1 * Boat aluminium rod holder Note: Please allow 1-3mm/0.04"-0.12" error due to manual measurement. Due to the different monitors and different light,the picture may not reflect the actual color of the item. Thanks for your understanding.