WT. Foster Guitars OEM string choice! Dean Markley

WT. Foster Guitars uses Dean Marley Blue steel 10-46 strings exclusively on all our guitars! the following is some background info on the process to achieve these excellent quality strings. after many tests with just about all strings out there we found Blue steel string just bring our guitars to life with crisp and stable tone.
  
By now you probably know that our ingenious Blue Steel strings are cryogenically frozen with a blast of liquid nitrogen. But why would we do such a thing? By freezing our strings down to -320ºF, we tighten the molecules, minimizing microscopic gaps. This process removes transient frequencies that produce harsh highs and muddy lows, creating a more consistent string, with true tone and longer life. A method to our madness!
Made of 8% nickel-plated steel outer wrap on tinned Mandolin wire hex-core, Blue Steel strings have been top-sellers for years and are used by pros worldwide. Once you try Blue Steel strings you’ll be hooked. They feel great, ring true, are durable and long-lasting, and they just plain sound good.
(This information is from Dean Markley's website and is for informational use only)