Material: Padauk, Indian Teak, African Ebony & Haldu. Instrument: We recommend Heart Tones for Acoustic Guitar, Electric Guitar, Bass Guitar & Gypsy Jazz Guitar. Tone: African Ebony is hard and dense and as such has clean crisp bright tones. Indian Teak is a Mid Hardness Timber which has well balanced tones across all frequencies. Haldu is a Mid Hardness Timber which has well balanced tones across all frequencies. Padauk is a soft Timber which has an extremely warm tones. Design: Heart Tones are designed for those people who require a sharp Jazz Tip but also need a high level of grip. They have a double dimple that positions the thumb and a scoop on the other side for the first finger, which stops the plectrum from rotating. They are very comfortable to hold and lock into the perfect playing position. Contents: This tin contains 1 of each of the Heart Tones Guitar Pick.