This is a geared friction-mount tuner/machine head for use with drone strings on 5-string banjos. This style of tuner is mounted into a hole drilled part-way up the side of the neck. They feature white pearloid plastic buttons and nice smooth gears and a shiny chrome finish. Usage instructions are not included with this item. The banjo neck shown in the listing photos is for reference only, this isting is for a single tuner.