Sigma Series 4 Guide Bar Extension 500mm (17A) is the perfect accessory for extending the cutting capacity of your Sigma Series 4 tile cutter. Designed for precision and stability, this high-quality extension bar adds 500mm of additional support for large-format tiles, ensuring accurate alignment and clean cuts. Easy to install and built for durability, the 17A extension is a must-have for professional tilers handling oversized porcelain or ceramic tiles.