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After my first time use with Crapsman and it sheared off. I ordered a Gear Wrench 3680 Serpentine belt tool, ordered it from Amazon, for $58 and some change yesterday, it arrived today with free shipping. Tool is much more than I expected, had the belt changed in no time, and no cursing or busted knucles.
I've got the one from the Autozone loan-a-tool program. Don't know who makes them, OEM I think, but it one of the best investments I ever made. It makes changing a serp belt easy. I've used it for a couple other things too.
The thinner handle gives you more room to work with in cramped engine compartments, plus they are usually longer and don't have a flex head to deal with.