A set of 3-a-side guitar machine heads in black. Suitable for the Houston and Harlem guitar ranges plus many other guitar models. All screws and components included Music is for everyone so we’re making it easier for you to start playing. Backed by our years of professional experience the Gear4music range gives you access to a vast collection of instruments audio gear and accessories. Produced ethically and responsibly theyre suitable for every musical interest while meeting the expectations of a caring world. There’s never been a better time to start making music.