I didn't even check the sizes....but come to think of it, I guess they can be for spark plugs, since most OEM tool kits supplied with outboards have pliers, screwdriver, and spark plug sock
Find many great new & used options and get the best deals for Mercury Mercruiser Quicksilver OEM Part # 8m0072716 Tool Kit at the best online prices at eBay! Free shipping for many products!