Brand - Unbranded
Type - Harmonium Knobs
Material - Fiber
Package Content - 4 Harmonium Small Stops Knobs
It is suitable for harmonium.
On the front of the harmonium is usually a series of larger knobs that allow air into the respective air chamber(s). These are called stops. These allow you to play one or all of the sets of reeds and control the amount of air (volume) to each set of reeds.