I bought this because I didn't really want to figure out all the sizes and rearrangements of the intake manifolds. I figured I'd take that with all the variety and it'll fit in one way or another. NOT CORRECT. None matched my table saw, period. Neither of my two hand sanders could connect to my (admittedly small) vacuum hose. have you seen hack no And in combination? no Also, they're made out of hard, rigid plastic, so there's no way to squeeze them tight. I don't know what to use them for other than a visual tutorial on how to measure before buying.