Mercury - Tool-retainer nut - 91-8M0176115 Mercury Mercruiser External Engine 7/8" outer diameter with 3/4"

7/8" outer diameter with 3/4" insert

"Trip Free" - cannot be held closed after trip 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

Base is black plastic

Provides multi-point corrosion protection for sterndrive components

predictable rhythm

Mercury - Tool-retainer nut - 91-8M0176115 Mercury Mercruiser External Engine 7/8" outer diameter with 3/4"Tool retainer nut WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.