When installing or removing a cassette lockring, it's easy for the tool to slip out of place. IceToolz addresses this problem by adding a guide pin to their lockring tool. The guide pin slips into common 12mm rear hub axles, holding the tool in place and preventing it from slipping while you turn the tool - simple, but effective.
This tool fits common Shimano cassette free hub lockrings, as well as many SRAM, SunRace, and other brands that use the Shimano-compatible lockring.
The tool fits 1/2" ratchets, or you can turn it with a 21mm combination/box wrench, or simply use an adjustable wrench.
Fits common 12mm rear hub axles: 12 x 142mm, 12 x 148mm boost, etc.