Wesmar dpc25 model number B16930 Four bladed dual props 12 inch diameter ment for a 12 inch tunnel Has electric attachment for 24v for both dc or ac but can be converted for hydrolic if you need. Manufacturer recommends to use for a ship size up to 80 feet. It was taken out of an 84 ft military ship and worked just fine for that size as well. Thruster has props, mounting flang, and 24v attachment up top. Taken out a few months ago and stored until I could finally learn all of its specs. Just cleaned it a little and then tested it with dc before taking pictures and posting, and it still works great The serial numbers near the props I found out reference to what type mounting flanges compatible #s wesmar dpc25 623581BR and 628532AL. But like I said, it comes with one that goes right onto a 12 inch tunnel 2000 obo. Don't be shy, call or text me at 3six0 865 271 3 Calvin Thanks