DR Strings Dragon Skin+ Coated Accurate Core Technology 6-string stainless steel bass strings give you a powerful low end and clear highs. Dragon Skin+'s patented Accurate Core Technology creates grooves in the string core to securely seat the wrap wire, allowing the strings to ring out fully. A micro-thin coating provides long life while maintaining an uncoated feel. These strings are designed to sound and feel better than anything you've played before. With Dragon Skin+, you'll get deep lows, crisp highs and balanced tone.