Helps you stay in tune longer and reduce string breakage. The pro strength biodegradable formulation contains anti-wear, anti-oxidant and anti-corrosion additives fortified with PTFE. Odorless, non-staining and silicone and petroleum free. Apply to nut slot, bridge, saddle and string guides every string change. Does not affect the sound or sustain of the strings. Great for moving parts such as open tuners and tremolo bars. Includes a fine tip applicator to apply in hard to reach areas. 10mL/10cc