DR Strings Dragon Skin+ Coated Accurate Core Technology 4-string multi-scale stainless steel bass strings give you a powerful, balanced tone with superior longevity. Patented Accurate Core Technology creates grooves in the string core to securely seat the wrap wire, allowing the strings to resonate fully. A micro-thin coating provides the feel of uncoated strings with long-lasting protection. These stainless steel strings are designed for multi-scale basses, with tapered string gauges that evenly distribute tension across the fingerboard. The difference in tone and playability is stunning.