The lyre harp features durable metal strings, pins, and rivets. This 10-string lyre harp is made with high-quality metal materials, producing a clear and beautiful sound while being gentle on the hands and easy to tune. A tuning wrench is included to adjust string tension by turning clockwise or counterclockwise. The instrument offers stable tuning, excellent sound quality, and resistance to moisture and rust. High-quality harp end pegs ensure strong string fixation. The metal tuning pins have a bright finish, resist fading, and feature strong hardness with plated threads, making them ideal replacements for loose tuning pins. The 10-string lyre produces a resonant tone that fills a room. Shorter strings produce higher tones, and string tension affects pitch. These tuning pins are suitable for dulcimers, zithers, harpsichords, or harps, and are designed to prevent hand injuries, providing an enjoyable musical experience. This set is a practical accessory for various string instruments and makes a great gift for children, adults, and musicians. Material: Metal Color: As shown in photo Package Contents: 1 x Tuning Wrench 10 x Piano Strings 10 x Rivets 1 x 10-String Lyre Harp Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement tolerance is +/- 1-3 cm.