2" yellow flipper bat used on Data East, Sega, & Stern pinball machines.   
In regards to Williams/Bally flipper bat #20-9264-6, this is a suitable replacement but not an exact replica.
Data East/Sega/Stern #515-7191-06
Williams/Bally #20-9264-6
American Pinball #VHR-BASM0004-00.