DR Handmade Strings NMR5-130 5 Electric Bass Guitar Strings Medium - 45-130Sunbeams are premium, nickel plated bass strings wound on round cores. Perfect for traditional and fretless players wanting a smoother feel as well as more brightness and warmth. Sunbeams feature the easily recognizable feel and flexibility of DR round core construction with nickel warmth, softness of feel, and increased response to magnetic pickups due to the sensitive magnetic content (compared to stainless steel) of the nickel plated wrap wire.