JS-CH17 Pro Clamp with adjustable 360-degree and 180-degree half conical connector for single tube trussing. The JS-CH17 pro clamp with half conical connector for single tube trussing allows you to add some single tube trussing or create a new connection point to the angle you desire. It can be set from 0 to 180-degrees giving you versatility and pleanty of truss clamping options. Each clamp is made of heavy-duty cast aluminum for long life, great strength, and ease of use. JS-CH17 Rotating Pro Clamp Features: Manufactured in Jerry Stage‘s own factory. Allows Angles Not Possible with Standard Trussing corners. One Side Conical Couplers Included. Material: 10mm EN-AWT6 6061 Aluminum. TUV Certified Aluminum Welding.