Ento Kago Fishing Ippatsu Kago 4. This is a handmade item I created as a hobby. Made of stainless steel (32φ) and some plastic, it weighs 70g. The lock releases upon water entry, allowing the lid to open at the desired depth. The lid will not open even if the cage touches the ground during the cast. It allows for balanced long-distance casting. Please refrain from purchasing if you are sensitive to imperfections or seek a perfect product, as this is a handmade item.