Item Type: Classical Guitar String Machine Heads_x005f_x000D_Material: Metal_x005f_x000D_Gear Ratio: 1 to 15_x005f_x000D_Features: Divided into left and right, single hole plastic column_x005f_x000D_Plastic Column Shaft Diameter: Approx. 9.8mm / 0.39in 11:15 GEAR RATIO: The gear ratio is 1:15, made of solid metal material, heavy duty internal gears, durable and rust proof 2BEAUTIFUL DECORATION: Finished with white pearl buttons, ideal for classical guitars, beautiful and practical as a decoration 3 REPLACEMENT: Classical guitar string machine heads are easy to install, great for replacing old or dirty tuning pegs, guitar tuning 4WITH LEFT AND RIGHT SPECIFICATION: Divided into left and right, single hole plastic column, plastic column shaft diameter is 9.8mm 5STABLE AND DURABLE: Classical guitar string tuning pegs has stable structure, excellent performance and long service life