Compatible: 1/8" and 3/16" single-speed chains

fit for: 1,5,6,7,8,9,10,11,12,13 speed chain

Compatible with 1/8” single-speed and 5 to 12 speed derailleur chains
Light weight and mini size
Use with a long allen wrench, easy removal of even the toughest chain pins. (Recommended to use an allen key of 10 cm or more)

Since the threaded column is not a complete circle, without a limit ring, the chain cutter will expand to both sides when cutting the chain, the expansion will cause the thread to loosen, and then destroy the thread and the chain will be stuck. The more times it is used, the more likely this will happen.
In order to solve this problem, this tool has a limit ring, which assists the positioning of the chain, but also hold the threaded column to prevent it from expanding. So you can cut the chain smoothly every time