This Pack of 3 Artist Quality Dark Rosewood Sculpted Guitar Picks is recommended for acoustic and acoustic electric guitar. These picks are a finely sculpted artisan crafted guitar pick with a thumb impression and finger groove designed to be the most comfortable pick grip of your life. Our Dark Rosewood is a rich brown wood with honey streaks and an even grain. Rosewood is the most popular and generally most tonally enticing wood used in guitar making today. It brings out richness in low tones and accentuates the brightness in high tones in guitars and we like to think that even as a guitar pick it adds to the overall quality of musical output for electric, acoustic electric and especially acoustic guitar. This is one of our most consistent and versatile picks. US Blues® offers music accessories made of sustainably sourced exotic materials that improve the tone and modulation of your instrument and therefore your overall playing and enjoyment. We use by-products of various industries, such as guitar making, to source materials that otherwise would not have been repurposed. We strive to bring the quality of your music to a new higher level and are proud to have elevated the guitar pick to the level of "Pick as Instrument".