Durable and Stable: Guitar tuning pegs made of metal and plastic material, anti-rust and anti-corrosion. Easy to install: Comes with 3 left and 3 right machine heads, along with other fixing accessories. Suitable for: Ideal replacement for old, worn or broken tuning pegs on acoustic guitars. Excellent work: Ideal for tuning and adjusting the tone of the strings, keeping the instrument in good playing condition. Offers fine workmanship and durability for long time use.