The hub of this prop will have an outside diameter of 3-1/4", a height of 2-1/4" and an overall length of 8-7/8". Includes prop, drive pin, prop nut and lock washer. FITS "W" SERIES MOTORS: 65W, 355W, 365W, 555W, 565W. FITS: AJ3 MOTOR. FITS "M" SERIES MOTORS: 65M, 65MX, 365M, 565M, 665TM, 665MXT, 765MX, 718MX, 2HP. FITS MAG SERIES MOTORS WITH CHROME STEEL SHAFT: 15, 18W, 18M, 18WRM, 18RM, 18TMX, 18TM, 24W, 24WRM, 24M. The hub of this prop will have an outside diameter of 3-1/4", a height of 2-1/4" and an overall length of 8-7/8". Includes prop, drive pin, prop nut and lock washer. FITS "W" SERIES MOTORS: 65W, 355W, 365W, 555W, 565W. FITS: AJ3 MOTOR. FITS "M" SERIES MOTORS: 65M, 65MX, 365M, 565M, 665TM, 665MXT, 765MX, 718MX, 2HP. FITS MAG SERIES MOTORS WITH CHROME STEEL SHAFT: 15, 18W, 18M, 18WRM, 18RM, 18TMX, 18TM, 24W, 24WRM, 24M.