Prop & Nut Kits "A" (MKP-9). Easy-to-use kit that allows for fast removal/replacement of prop.. Available in three different sizes to fit Minn Kota prop dimensions (3/8", 1/2" and 5/16").. Includes prop nut and washer.. Requires a crescent wrench for installation.. 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.