Easy to use tool to remove or shorten a chain.
Better chain tools are designed to be better at fastening a chain together so that it is less likely to break in use.
This is now unnecessary on most chains because they have a quick link.
So, this tool is a good match with master link pliers tools for those quick links.
Compatible with 5 to 10 speed chains from Shimano, KMC and Sram, not Campagnolo compatible.