Performance Plus Instrument Cable, Crimson and Sand (SC20BC-4) Performance Plus Classic Vintage Braided Tweed Guitar/Bass/Keyboard Cable/Lead - available in 5 retro designs OFC (Oxygen Free Copper) center conductor with Helical Shield to prevent interference from nearby audio equipment, Fluorescent lighting or power supplies. Outer woven braided Poly cotton fabric outer jacket allows greatest protection with flexibility. Has (2) Straight 1/4" Nickel Plated Noise-Free Phone Plugs, wrapped in heat shrink rubber grip protectors. 7 mm Diameter Braided Fabric Design remains supple but is also impervious to heat and moisture