ROSLAU Piano Wire. It is flexible, bright polished, smooth and strong. Size 7. 018" 0.460mm. Size 6. 016" 0.410mm. Size 5. 014" 0.360mm. Size 4. 013" 0.330mm. Size 3. 012" 0.305mm. Size 2. 011" 0.280mm.
eBay