TWO-WAY HUMIDITY CONTROL – D’Addario Two-Way Humidification System is the only maintenance-free two-way humidity control system for guitar. It automatically maintains the optimal 45-50% relative humidity level within your instrument case by adding or depleting moisture as necessary. | REPLACEMENT PACKETS – Now available in bulk 12-packs that are perfect for luthiers and guitar repair shops! On average, the packets will last 2-6 months depending on the geographic location and the conditions of which the instrument is exposed to. | MAINTENANCE-FREE – Unlike refillable humidifiers, the D’Addario system is maintenance-free. It is long-lasting and does not require any adjustments based on seasonal temperature changes or geographic locations. No water, no drips, no mess. | PROTECT YOUR INSTRUMENT – The patented two-way purified humidity control system protects your instrument against warping, cracks and other damage caused by lack of humidification. This system eliminates the guesswork and anxiety of maintaining your instrument’s proper humidity level. | MADE IN THE USA - D'Addario Accessories is known for innovative, problem-solving, quality musical accessories that are proudly designed, engineered, and manufactured in the USA to the most stringent quality controls in the industry.

Gauges (mm): .50, .60, .73, .88, 1.0, 1.14mm | Maximum memory, minimum wear | Precise articulation and fast picking action in a cool matte black color

More flexible than Traditional and V16 reeds | Vibrates over a longer palette producing a bright sound with immediate response | Also available in other strengths | Every reed sealed in 'Flow Pack' to ensure freshness.