M-Steel wound strings feature black coated ball ends made from high quality brass wire rod to our exacting specifications
M-Steel Slinky strings are precision wound with a patented iron-cobalt alloy wire containing even more cobalt than Cobalt Slinkys providing maximum output and clarity.
The core is made from "M-Steel" which stands for maraging steel. This defense grade superalloy provides enhanced low end, improved tuning stability, and increased fatigue strength.
Regular Slinky M-Steel