1. This fishing reel drum is equipped with an aluminum alloy oval grip knob and a single rocker arm, making it a good accessory for fishing reel modification. It is made of aluminum alloy, which is strong and durable, and can add reliable performance to your fishing reel. 2. Its unique design features are quite eye - catching. The oval grip knob is distinctive, offering a comfortable feel and allowing you to operate the fishing reel more easily. The diameter of the grip knob is 42 millimeters, with a moderate size. It won't be too large to affect the operational flexibility, nor too small to cause unstable gripping. The length of the rocker arm is 94 millimeters, providing a more suitable lever arm for your fishing operation and making it more labor - saving to use. The 5*8 millimeter hole pitch is precisely matched and easy to install, enabling you to easily complete the modification and upgrade of the fishing reel. 3. Whether you are an experienced angler or a novice in the fishing field, this rocker arm can enhance your fishing experience. It can improve the performance and operational feel of your fishing reel to a new level, making each fishing trip more convenient. 4. It is suitable for various fishing scenarios and is a good choice for enhancing the performance of the fishing reel.