Used Gerbing 12" dia. the flange is 3/4" high the inner diameter / belt surface is around 10-1/2". Bored for a tapered bushing

The Groove is a little over 1-3/8" at the bottom and around 1-3/4" at the top

  [Please Look at all the pictures they are part of the description]

 This is used surplus to a now closed factory that kept spare parts on the shelf and show some wear from use and may have some dust/dirt on them.

                                                                             [B1-F1-R4-S2-4]