This expansion kit is compatible with RAY5 5W/10W/laser engraving and cutting machine. After installation, it maintains the accuracy and stability of the engraving machine, ensuring high-quality engraving and cutting. Longer extension kit includes all the necessary accessories for effortless assembly, such as cables, a detailed instruction manual, synchronous belts, zip ties, and Y-axis crossbeam aluminum profiles. We're here to assist you with prompt and helpful service.