Chrome - Set of 4 enclosed gear bass guitar machines, adjustable, 2 + 2. Whatever your tuner requirements, the comprehensive Guitar Tech range of replacement buttons and machineheads can offer you the perfect solution.Don't put up with sloppy, worn-out and inaccurate machineheads any longer - Guitar Tech's precision-geared tuners are engineered from high quality materials to feature a smooth, positive action which offers stableand responsive tuning.Available in a number of traditional and authentic tuner styles and finishes, in a range that covers all acoustic, electric, classical and bass guitars.Presented in attractive, carefully-sealed packaging for easy identification, and with all bushes, washers and screws supplied, so why not make your guitar feel as-new and treat it to a tuner upgrade today?