Reeds 'n Stuff Octafree for Oboe; octave valve cleaner for oboe; silently and quickly removes unwanted water from the two octave valves; ideal in particularly critical situations, e.g. for live recordings or radio recordings; thanks to the durable silicone seal, the water can be removed directly from the octave valves, keeping the pads dry; the moisture is hygienically absorbed by the filter; material: stainless steel; scope of delivery: octave valve cleaner, two additional filter inserts, transport box; suitable replacement filter: #580170