Stop completely in the steering wheelThe Topeak mini tool Ninja C chain sponge makes it possible to shorten your chain to the desired length. The special thing about this chain punch is that you can completely hide it in the steering wheel. However, you must have a straight piece of 70 mm and a diameter of 16.5 - 20 mm. This allows you, for example, to leave space in your saddlebag. The chain sponge is suitable for multispeed chains up to 11 speed and has an integrated chain hook.