13 swg piano wire and make a couple up for yourself:
Piano Wire, Noggin End Metals, Stoke-on-Trent
Piano Wire - Carbon steel music wire chemical composition: carbon 0.7 to 1.0%, manganese 0.25 to 0.75%, silicon 0.35%, phosphous and sulphur 0.03% minimum. Sorry to say our range of smaller sizes are now unavailable due to supply difficulties. All Piano wire prices reduced, while stocks last.www.nogginend.com