Why We Make This
We don’t, because the good people at Park already made the perfect tool for the job.
Why You Want It
In order to use our large and efficient bearings with the smaller Micro Spline lock ring we use a threaded insert, and during service, you might want to remove it.
When deciding which tool interface to use we chose the Park Tool FR-1.3 because it has a deep enough socket to clear the through axle and a narrow enough a spline pattern to fit within the Shimano lock ring threads.
12 splines, 22.6mm diameter fits Shimano®, Sachs® Aris, Sun Race®, DNP® Epoch and other 5–10 speed freewheels. The FR-1.3 includes an enlarged thru-hole to accommodate 14mm axles. Base of tool can be installed in a vise or used with a 1" socket or wrench.