The shaft is 50mm, 2400mm in length, tapered on both ends. I may have spare prop washer, prop nut, key, and coupler, that fits on the tapers, but I have to check my storage. Machine shops can cut this down and remove/modify the tapers and customize couplers, keys, etc, too I think. It was used with a 4 blade 24" propeller. This shaft is in good condition and was not involved in any accidents, kept as a spare. Being sold as-is. Replacement cost is $3000+. Asking $2,000 OBO. Pickup in Connecticut preferred but if you want to pay for and arrange shipping, be my guest. Make an offer.