When ordering Flexible shaft and Accessories, each item should be ordered for specific tube / pipe size range. Shafts have color coded durable aluminum caps for easy identification. Stainless Steel inner Cores ensure our shafts have longest lift, flexibility and resistance to corrosion. To order Flexible Shafts(s), determine tube I.D(s) and length of the longest tube(s). Order Flexible Shafts(s) To correspond with tube I.D(s) and lengths. Please ask us for special or longer lengths.