The Prop Wrench! Easy to store All composite Rugged Nylon to resist stripping Fits all 1 1 /16" Prop nuts (40 HP and Up) This 1 1/16" six point socket style prop wrench is made of high Tensile strength, indestructible nylon. It is totally resistant to fuel, sun, salt water, and other chemicals. This Propwrench is less expensive than metal wrenches which rattle and can cause damage to your boat. However, it has plenty of brawn to get the job done. The wrenchwill tighten all 1 1/16" propeller nuts without sl