Hipshot HB6C-1/2 Ultralite Bass Guitar Tuners CHROME, Clover Key, 5-String Set Solid machined aircraft grade aluminum housing gives you high durability in an extremely light package. Original 2-tone chrome- brushed chrome housing with shiny chrome key Tuning keys are easily reversible for conversion to bass or treble side. 1/2" string post fits 11/16" headstock holes Made in the USA