If you're frustrated with your current cassette lockring
tool constantly slipping up while on the job, we'd suggest the Integrated
Cassette Lockring Wrench with Guide from Unior. It uses a central guide pin
that fits into the axles of quick-release wheels to help keep the tool from
slipping out. It also features an integrated handle for a sure grip with plenty
of leverage to back off those pesky, tight lock rings. It's compatible with
Shimano and SRAM-style cassette lockrings and certain rotor lockrings.
A lockring remover with a guide pin and integrated handle
Offers a secure connection to lockrings and plenty of leverage
Shimano/SRAM HG lockring compatible
Familiarity: I've used it several times
This is a great cassette removal tool, and makes removal and tightening so easy!