SCHMITT ONGARO Schmitt and Primus Model 740 - 13.5 in Wheel w/Knob and Finger Grip - 3/4 in Tapered Shaft w/Faux Nut - 1/2 in and 3/4 in Adapters SCHMITT MARINE PRIMUS WHEEL 13.5" SS W/ KNOB FINGER GRIP