DR Strings Dragon Skin+ Coated Accurate Core Technology 6-string multi-scale Quantum nickel bass strings give you huge tone and outstanding durability. Dragon Skin+ packs patented technology into both the core and wrap wires for exceptional balance, volume and playability. Accurate Core Technology creates grooves in the core to securely seat the wrap wire, allowing each string to ring out fully. A micro-thin coating provides long life while maintaining an uncoated feel. Designed to sound and feel better, Dragon Skin+ strings are like nothing you've played before. These strings are easy to play and upgrade your bass's tone. With Dragon Skin+ strings, you can focus on your performance, trusting your bass will sound its best.