Weedless Wedge™ Props (MKP-7)The only 100% fully weedless prop. Design pushes weeds away to conserve battery power. Easily moves through heavy vegetation or cover, even at slow speeds. Motor Diameter:   3 – 5 \/ 8"Prop Nut Kit:        "A" WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.