LTR 9 strings for electric guitar. Hardness 09-11-16-24-32-42. The material used for wound strings is nickel. The strings are made by hand and wound to the end. They are more versatile in sound, while the sound is sharp enough for rock, metal or modern blues. They have a distinctive atack and an amazing sustein for chord playing. In treble and bass, they have a surprisingly pleasant steel and sound-strong character. Tuned, they last a very long time.