Review on Presta Valve Adapter Schrader Inflatable by Keith Samuel

I bought this primarily for a small hose so I can use it as a screw on valve fitting for bike inner tubes rather than my hand pump's snap fitting. The knurled connector on the small hose rotates, but so reluctantly that it's useless for the purpose. Worse, the second time I pulled the small hose out of the hand pump port, the fittings on the end of the extension hose came loose, ruining it forever. I ended up throwing the whole set away. money down the toilet.