P-162-AX Roller Bearings ASSEMBLY Kit. These pieces are available to aid in the assembly of the Roller Bearings (P-162-A) into the shaft hole to replace the old pot metal bearing. You still need to use your own 1/2″ wrench. This assembly does not need to be purchased if you create your own [Steps 1. and 2. in the INSTALLATION instruction sheet], but it can save you time to finish the job. Suggestion: Save the parts for other projects when done.