Planet Waves single adapters are ergonomically designed with a durable polymer over-mould for extra protection and easy gripping. The adapters are fully shielded and have 24-karat gold-plated contacts for maximum conductivity and corrosion resistance. For secure fit, patented compression springs are used on all single adapters with male or female 1/4", 1/8" and Banana plugs, and male RCA plugs.