Mixing Propeller, 13" 4 blade , 3/4 - 1 5/8 inch bore ,can make just about any size bore. Just ask. NEW. Made In USA. 316 ss. Condition is "New". 13 inch 1 inch or any size . Also have 10, 11, 12, 14 15, 16, 17 diameters.Just message me. Mixall Propellers