Used sheave or pulley off a Quincy QT5.  Data online says it also fits the QT7.5 and PLT7.5
14" in diameter.
Part number 113944, this is the 2 vee belt version.
Great condition, no cracks, chips, welds, chewed up bore or stripped holes.
Bore is a taper without any keyway.
Sorry I don't know if it fits other models.

Free shipping in CONUS.

Shipping.
I usually ship next business day, but due to the occasional buyer demanding a refund if the shipped item does not arrive within the Ebay posted expected delivery date due to USPS slow delivery or some issue beyond my control, I have listed as a 30 day handling time.  
However, as noted it will in reality be shipped promptly.