Sperzel are the All American tuner. They manufacture, assemble and plate every single one of their machine heads in the USA. They have been producing guitar machine heads out of Cleveland, Ohio for over 40 years! Their high quality machine heads have been a standard for many guitar builders and players for many, many years. The Trim-Lok system, unique design and precision tuning makes Sperzel tuners a stand out amongst the competition. In addition, their range of customisable options is huge; you can choose from any combination of housing model, button style and post type all in a range of colours and finishes. For example, you could choose a separate colour for all of those parts and your locking thumb wheel. “Where there is tradition, there is opportunity for improvement.” - Bob Sperzel