The Birzman lockring socket Shimano freewheel tool to loosen or tighten a freewheel on the wheel hub!
Compatible with Shimano® MF™ Freewheels or other similar 12-spline Ø22.7mm freewheels.
Lockring socket features
Material: Alloy steel
Functions: 1/2'' Drive
Note: This is the tool you'll need in order to mount / remove the 7-speed freehub with freewheel we're offering in our shop!
Tutorial on how to exchange the new freehub with freewheel on your Uni MK