This is Du-Bro's 1/4"-28 Anodized Aluminum Spinner Prop Nut.

• Red anodized aluminum spinner.
• Meets AMA safety specs.
• CNC machined from 6061 T6 aluminum.
• Works with standard electric starting cones.
• This will fit the following engine models: ASP- .21 ABC-.46 ABC ENYA- SS.25, SS.25BB, SS.30, SS.30BB, .35X, SS.40, SS.40BB, .46 4S, SS.45Ring, .41 4S Fox- .19RC & CL, .25RC & CL, .35CL, .40RC & CL, .50RC BB, .45RC Schnuerle, .40 Quickie Fitzpatrick- .61 ABC HB- .20-.61 all models HP- .21-.61 all models Irvine- .20-.61 all models K&B- .20-.65 all models Magnum- GP.25, GP.40, Pro.25, Pro.36 SE, Pro.40 SE, Pro.46SE MDS- .46, .25-.40 Merco- .33-.40 Moki- .61 Long Stroke all models O.S.- .20-.50 all models, .61SFN-H RC, .61RFN-H ABC, FS.26 Surpass, FS.48 Surpass, FS.20, FS.40 Picco- .21-.45 all models Royal- .25 & .28 RC BB ABC, .40 RC ABC Schnuerle, .45 RC BB Schnuerle ABC, .46 RC BB Schnuerle ABC Supertigre- .19-.56 all models, .60G & ST Thunder Tiger- GP.25, GP.42, Pro.25, Pro.46, F-54S Webra- .21-.60 all models

• (1) Anodized Aluminum Prop Nut

• Approx. Weight: 1oz
• Shaft Size: 1/4"-28

• Tighten nut with a screwdriver, ball driver or steel rod.