This product is a bass string, which is made of durable copper alloy and steel material, with good texture, safe and practical. Easy to install and use, it can be easily applied to your bass, a very practical accessory that will meet your needs well. Features -Color: Silver -Material:Steel core, copper alloy -Size:16.20X16.20X1.50cm/6.37X6.37X0.59in Diameter: 2.67mm, 2.16mm, 1.65mm, 1.14mm - The copper alloy and steel material used in these strings ensures that they are resistant to wear and tear, making them a great investment for any musician. - The tight winding of these strings ensures that they produce a clear and crisp sound, perfect for any style of music. - These strings are perfect for anyone looking for a reliable set of bass guitar strings. - The clear sound quality of these strings makes them perfect for recording and live performances. - The product is light, portable, easy to use, and is a convenient and practical bass string. Package list: 4 x strings