This is a set of a straight tenbin (fishing weight) and a rocket cage. The tenbin is approximately 20 cm long. A strong component with a breaking strength of 39.2 kg is used for attaching the cage. The rocket cage also allows you to adjust the amount of bait released by changing the position of the green rubber. In addition, the weight can be attached using a snap, so you can use heavy weights like size 10 or 15, or lighter weights like size 3. This set is ready to use as is, but you can optionally use cushion rubber. If the line gets tangled depending on the environment, bending the tenbin into a "ノ" shape by hand may alleviate the tangling.