Many musical instruments need a drop of oil from time to time to stay in working order. The keywork of wind instruments, the wooden bodies of flutes and clarinets, the mechanical parts of saxophones, piston valves, fingerboards and mechanical components of guitars, etc. require a treatment with special purpose oils. The Precision Oiler Pen is the perfect tool for oiling musical instruments. It is particularly important not to use too much oil and to apply the oil to these tiny spots very accurately.