With a 12mm guide pin to stabilize the tool for the through-axle hubs
. For Shimano CS, SRAM, SunRace, Chris King compatible cassettes and Shimano Center Lock disc brakes
. The guide pin prevents the tool from slipping out of the spline of the cassette lockring
. Use with 1/2" Two-way Ratchet Wrench (#53R4) or 21mm spanner
