Item Type: Guitar String Tuning Pegs_x005F_x000D_Material: ABS_x005F_x000D_Product Size: String Button Length: Approx. 11cm / 4.3in 1ACCURATE TUNING: Guitar string tuning pegs use advanced technology to provide accurate tuning for all three strings of a guitar 2DURABLE MATERIAL: Guitar triple knobs are made of excellent ABS, ensuring durability and using time 3FOR ALL TYPES OF GUITARS: Guitar triple knobs are designed to work with all models of guitars, including acoustic, electric and classical guitars 4EASY TO INSTALL: This tuning pegs package is very easy to install and come with all the necessary accessories to quickly complete the installation process 5GREAT FOR SHOWS: Guitar machine head tuners are great for live shows because allow guitarists to quickly and easily adjust guitars on the stage without any distractions