Harmonica Rescue Tool 4-Piece Set: Valves, Levers, and Reed Adjustment Product Description This is a 4-piece set to improve common harmonica problems. * Sluggish slide levers * Valve noise * Sound blockage around the reeds 4-Piece Set Contents 1. Harmonica Slide Oil This is a special oil to keep the slide of a chromatic harmonica in good condition. Applying a thin coat to both sides of the slide and the spring holes will provide smooth movement. It is made from non-toxic ingredients. 2. Valve Repair Tool Many people have experienced sound blockage because the double-layered valves tend to stick together due to condensation. Carefully peeling them off can be difficult, and the valve might break... The solution is to gently insert a 0.02mm shim tape slowly and lightly, then pull it back to improve the situation! This 0.02mm shim tape is also very useful for filing and removing debris. It removes foreign objects by passing through the gap between the reed and the hole, eliminating the cause of sound blockage. 3. Reed Adjustment Tool At first glance, it looks like just a pair of tweezers, but one side is processed to be thin enough to go under the reed. This is a homemade tool from a harmonica workshop that is used every day. The gripping part can hold the reed, allowing for stable reed adjustment. The feel of blowing and drawing greatly changes depending on the reed height (lift). It's also fun to set and explore the reed height to match your preferred feel. 4. Cloth Reed adjustment is explained in the separately sold Custom Harp Workshop video.