Bus Bar Connect T Bar Breaker Pole 2000 Amp Lot Of 2

Believed To Be Westinghouse BA2000PB
Base measures 2-1/2" x 2-1/2", with four 5/16" mounting holes, 1-3/4" center to center.
5-1/2" tall x 2-1/2" wide with four 7/16" holes, 1-1/2" center to center
 In Used But Good Condition