This is new, but looks to be in good condition.  Maybe a bit of oxidation.  This rocks.  Bore on the one side is 3/4"

Disclaimer - Seller not responsible for any damage to life, limb, or property due to this device.  Buyer must test this device to ensure it functions properly before its use.  If unit is found malfunctioning this seller will offer money back.  

Will ship free..... USA

 please ask questions.