20FT 13PIN MIDI CABLE ROLAND GR33 GR20 GR30 GR VG 20 33 PLANET WAVES The S24 Cable is a functional equivalent of the Roland GKC. If you want to save yourself the high cost of purchasing a Roland replacement cable, our custom designed cable is highly recommended for you. 20 Foot Length Capable of connecting most 13 pin Guitar Synths High quality assembly type connector Locking tabs integrated to ensure retention