Features: Made of qualified material, sturdy and durable, ensure a long time use. The tuned guitar string does not loosen easily. With these tuning pegs, you can tune guitar strings fast and accurately. internal gear, it's effective to prevent screw slippage. These tuning pegs are compatible with classical guitars. Ideal to replace your old and dirty tuning pegs and great for guitar tuning. Specifications: Condition: 100% Material: -plated copper-zinc Alloy + Acrylic Weight: Approx. 131g / 4.6oz Machine Heads Spacing: Approx. 3.5cm / 1.4in Size: Approx. 12.2 * 4.2 * 4cm / 4.8 * 1.7 * 1.6in Color: Silver Package list: 1 * Left Machine Heads Set 1 * Right Machine Heads Set 8 * Screw