1015G20 2.126" X 1.624" ZENAR 150A1746

HUB #1 BORE: 2.1245/2.1250" KW: .500/.5025" X 2.356/2.366" [1/2" x 1/4"]

HUB #2 BORE: 1.6225/1.6230" KW: .3750/.3775" X 1.800/1.810" [3/8" x 3/16"]