Features: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Suitable for guitar.4.The surface is silver and pearl color, which can perfectly replace the original parts and is easy to integrate.5.The 3pcs knobs are in line, and the product includes a left and right tuning key, suitable for guitar tuning.6.Equipped with screws, installation is convenient and simple, and can be quickly replaced.7.Heavy duty internal gears and standard sizes.Specifications:Material: Metal and PlasticColor: Silver and PearlBrand name: BQLZRSize: 120x40mm or 4.72inchx1.57inch (LxW)Weight: 163 gPackage include:2 x Guitars Machine Heads8 x Screws1 x Screwdriver Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.