Item Type: Guitar String TunersMaterial: Metal and plasticColor: Gold 1NON SKID GEAR: Made of excellent metal, with heavy duty internal gear, which can effectively prevent the screw from sliding 2STABLE AND RUGGED: Helps provide better tuning and greater stability, easy to install and durable, very practical 3PERFECT REPLACEMENT: Exquisite workmanship, an ideal replacement for guitar tuning keys, and a good partner on your learning journey 4STURDY METAL: Using excellent metal and plastic material, shiny, sturdy and durable, possess high mechanical strength, not easy to age 5WITH FITTINGS: Equipped with screws, studs, gaskets, easy for you to install and use, complete accessories guarantees convenient operation