1-WRC-02 cartridge / 1-WRC-03 cartridge / 1-WRC-04 case (no cartridge). The Yamaha RX-5 Original Drum Machine Waveform ROM Cartridges are essential components for any musician or producer looking to expand their creative capabilities. These cartridges, specifically designed for the Yamaha RX5 model, offer a wide range of unique waveforms and sounds to enhance your drum machine's capabilities. With the included case for storage and protection, you can easily access and organize your waveform ROM cartridges for endless creative possibilities in your music production. The Yamaha brand ensures high-quality and reliable performance for all your electronic drum needs. If you are into vintage drum machines and have an RX-5… these are a must have!