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Atom, Regina, Zeus, Schwinn freewheel removal tool FR-4 by Park Tool

The FR-4 freewheel removal tool from Park Tool Fits Atom, Regina, Zeus and Schwinn freewheels with 22mm inside diameter

The FR-4 is made from heat treated alloy tool steel, one inch base fits wrench or bench vice.

One-inch base fits end of SR-1, FRW-1 Park tools or simply an adjustable wrench / spanner or bench vice

Fits Atom, Regina, Zeus and Schwinn notch freewheels with 22mm inside diameter

Note: You will also need a chain whip tool to hold the cog in place.

Weight: 58g (2.ozs) 

Park Tool Reference: FR-4