The Ryugi custom frog hook, which is premised on a power fight with a tough tackle, has a thick shaft. Therefore, the penetrating power is slow, and the risk of disintegration naturally increases. The custom frog hook uses a TC coat and high-strength material to achieve both high penetration and high strength. Due to the structure of frogs, the hooks are apt to rust. If the thick shaft hook, which has a slow penetration force, rusts, the penetration force will be significantly lost. Regular hook replacement is recommended to ensure that you have a small chance.