Good quality speaker cable with excellent Neutrik Jack plugs. Ideal for older classic amps speakers cabs, and modern micro amps such as Elfs, Gnomes, (and other mythical woodland creatures) that don't have Speakon connectors.
Speaker cables are an important part of the signal path, so it is well worth getting good quality ones for a few euro/pounds more. I use these 2.5mm cables for medium power output applications, i.e. typically for bass amplifiers up to a maximum of 500 (above this I use 4mm cables).