Medium Custom strings for sevenstring electric bassguitar. Taper-wrapping at the bridge allows the SR2000 string to vibrate more easily and longer. Their tone is unbelievable! They growl, they pop, they sing. These Dean Markley bass strings practically play themselves. Features set of seven strings. String size: .022 / .027 / .047 / .067 / .087 / .107 / .127.