Exactly what I was looking for my DeWalt 2 gallon battery powered shop vac. They fit the hose connector just fine and allow more useful applications for the wet/dry vac (while holding the vac, can reach more spots with the extension hoses attached). Normally using 2 extensions attached, doesn't seem to affect the suction power much if at all. A small nit: the crevice tool that came with the vac does not fit these (too loose).