Tuning pins Diamant 6.90 × 55 mm, nickel, 250 pcs

Diamant piano tuning pins are high-precision components engineered for exceptional tuning stability and longevity in upright and grand pianos. Available in both classic blued and nickel-plated finishes, they offer technicians the ideal balance of smooth tuning feel, optimal torque control, and corrosion resistance. Crafted from premium-grade steel with micro-thread precision, Diamant pins reliably hold high string tension, making them the industry standard for servicing, restringing, and restoration.