This pack of 3 Black Horn Sculpted 351 Guitar Picks is recommended for electric bass and electric guitar. These picks feature a curved shape giving your thumb and finger a perfect grip. These picks are an excellent replacement for real tortoise shell picks (which are illegal and not endorsed by US Blues®) in their beauty and luster. Horn picks are known for their hardness, full tone and regularity or consistency. Horn generally produces a balanced tone while being a very hard and sturdy material. These picks are among the hardest wearing in the entire line. 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".