DR Strings Dragon Skin+ coated Accurate Core Technology 4-string stainless steel bass strings are designed for bassists seeking rich, balanced tone and long string life. Dragon Skin+'s patented Accurate Core Technology creates precision grooves in the string core to securely cradle the wrap wire, allowing the strings to ring out with full resonance. A micro-thin coating on the stainless steel wrap wire delivers the feel of an uncoated string with enhanced durability. Whether you favor deep rumble or articulated growl, Dragon Skin+ bass strings empower your unique tone.