Super-amazing plumbing supply store??

Ok, so I just bought a used washer/dryer from a friend, which is probably the most adult thing I've done thus far. Thing is, it's a older Kenmore model, Sears doesn't make them anymore, and I need to find whatever kind of bit of plumbing hardware it is which will connect the hose to my sink faucet. I can't tell by looking at it (doesn't seem to be a typical male/female type of thing), and I can't remove the hose from the washing machine in order to bring it around with me from store to store.

So I'm hoping someone might know of a superincredible plumbing kind of store, filled with incredibly knowledgable staff, who really really know their stuff. I can take a digital pic of the hose and bring it with me, but other than that I'm kind of stuck.

The superincredible plumbing shop doesn't need to be in CH, anywhere in Brooklyn or Manhattan would be fine...

Thanks!