Audio lead from 3.5mm jack plug to a pair of phono (what the Americans call RCA) plugs. ipods, laptops etc. use 3.5mm jacks, and a wide range of decks (CD players etc.) and small mixers use phono connectors. Ideal leads for linking many of your audio bits together.
Every technician's toolbox should have one.
Available in 1.2M or 5M lengths