cello string full set 4/4 (adgc) aluminum-magnesium alloy string, nickel-plated ball head, warm sound, deeply loved by students and professional enthusiasts (also suitable for 3/4) c15 rayna wonderful sound quality is the biggest selling point of our products. the four strings sound harmoniously, and you will feel different textures of melody! these cello strings are manufactured under the strictest quality control, and have high-quality steel core, aluminum-magnesium winding, nickel-plated round head, and the surface is treated with a protective film, which has a bright appearance and is not easy to rust. it can also effectively improve the sound quality, so it is very durable. they can produce clear warm tones, soft and flexible touch makes all player levels easy to play. they are ideal for cello learners, players and performers. they are suitable for 3/4, 4/4 cellos . we will provide customized professional customer service after you purchase. if you have any questions about the product, please consult our customer service immediately and we will reply you as soon as possible.