Grover tuners have been keeping the world's guitars in tune for almost a century. Known and trusted as the finest tuners available, Grover proudly offers a lifetime guarantee. Popular since the '60s, Grovers Rotomatic tuners are now available in 2 gear ratios. Grover Imperial tuners are considered by many to be the archtop tuning machine with their decorative art-deco inspired knobs. Buy your Grover tuning machines with confidence today from PlayBetterBluegrass.com.