The Cassette Body Service Tool allows for removal of the R-H bearing race inside most Shimano and Shimano-copy cassette bodies. This tool is made of heat-treated 4140 Cro-Mo tool steel.

Q: What size wrench does the Cassette Body Service Tool use?

A: 1 1/4" Wrench

Q: What is the diameter of the hole of the Cassette Body Service Tool?

A:  9/16”   -or-   0.566

The diameter of the hole of the Cassette Body Service Tool has a nominal dimension of 9/16 inch. Precisely, that translates to 0.566 inch.

• 9/16" (Nominal Size): This is the standard, easy-to-remember fractional size. For example, in the case of a part like an O-ring, it would be its nominal outer diameter.

• 0.566" (Actual Size): This is the specific decimal dimension of the manufactured part, which is slightly different from the decimal equivalent of 9/16". The decimal equivalent of 9/16 is 0.5625.

Watch Brett demonstrate here.