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Great Planes Precision Prop Reamer Standard$19.99
A must for every modeler's field box. Enlarges prop holes while maintaining centering. Precision Prop Reamers are made of hardened carbon steel, with a stepped design for increased accuracy.
Modelers simply turn the removable T-handle to cut; can also be used with a drill press for added precision. Cuts 1/4", 7mm, 8mm and 10mm holes.