Set of 2 Heavy Duty Tuning Fork with Resonance Box and Hammer Sympathetic 16.5cm (6.5") Tuning Forks 440Hz Precise Specifications: The product meets

Precise Specifications: The product meets stringent specifications with clear limits for impurities including Sulphated ash

Durable Design: The banana plugs are made of pure copper

Full-size stand for display and study

⚠️Designed for use in professional laboratories by professionals

Set of 2 Heavy Duty Tuning Fork with Resonance Box and Hammer Sympathetic 16.5cm (6.5") Tuning Forks 440Hz Precise Specifications: The product meetsIncluded: Set of 2 Heavy Duty Tuning Fork with Resonance Box and Hammer Sympathetic Tuning Forks 440 Hz. Each of the large Aluminum Alloy tuning forks is hand ground to high accuracy and has a frequency of 440 Hz (hertz=cycles second). Each fork measures 16. 5cm (6. 5") long & is mounted on an individually adjusted resonance box. They have been carefully matched and individually electronically tuned for tonal clarity to their designated or physical