Material: Thai Cassia, Mimosa, Almondwood& Burma Padauk. Instrument: We recommend these Mandala Tones for Acoustic Guitar. Tone: Thai Cassiais a medium hardness timber, which is relatively frequency neutral. Although it will add some depth to the tone of most acoustic guitars, it will do so without dramatically altering the frequency of the tone. Mimosais the hardest timber that we supply as part of the Acoustic Tin, as such it will add some degree of brightness to the tone of most Acoustic Guitars. Almond Woodis a medium soft timber, which will add a good level of warmth to the tone of most Acoustic Guitars. Burma Padaukis close grained and polishes very well meaning that it will add clean crisp and bright tones to most Acoustic Guitars. Design: Mandala Tones are based upon the Classic 351 shape. They are typically 2.5mm thick chamfering down to a playing tip at 0.7mm thick. They then have a Mandalapattern etched with a laser on one side of the plectrum to give you a subtle grip feel. Contents: This tin contains 1 of each of theMandala Tones Guitar Picks. Notes: Although we have tried to ensure that our photos represent the Guitar Pick that you will receive, there is a high level of variety in our picks due to the nature of many of our natural materials.