3M™ Steel Barb Cable Ties Are Made Of High-Quality Nylon 6/6 and Designed With A Stainless-Steel Barb That, When Engaged, Presses Into The Strap and Grips Tight. The Strap Features A Robust, Ribbed Pattern to Help Ensure Your Bundles Stayintact, Even In High Vibration Environments. and Unlike Typical Ratchet-Style Cable Ties, The Barb Can Be Locked At Any Point Along The Strap, Allowing For More Precise Positioning. Plus, The Rectangular Head Design Includes Rounded Corners and Acurved Tip For Easy, Fast I