Product Description This is an angle adjustment joint holder made of aluminum alloy. It allows for angle adjustment and fixation of φ25mm and φ22mm support poles. The joint rotates 360 degrees, allowing for adjustment to your preferred angle. It can be securely fixed with a vise. The surface of the main body is rust-proofed, making it resistant to rust and highly durable, while also being lightweight. It can be used not only for crucian carp fishing, but also in a wide range of places such as swimming at the beach, camping, and leisure activities. How to Use 1. Pull up the handle and loosen the screw to widen the ring's diameter. 2. Pass the fixed pole and the rod-shaped object you want to adjust the angle of (such as a parasol or fishing rod) through the ring. 3. Tighten the handle to fix the rod-shaped object at your desired angle. 4. Finally, pull the handle down firmly to complete the process. Make sure there is no looseness. No instruction manual is included. The images used may differ in color from the actual product. If you would like to confirm the color closer to the actual product, please check the actual product photos. Imported goods may have fine scratches compared to those made in Japan.