These thumb nut bars are multi-purposed, replacing both the wing nut and vertical posts on our Professional Series Jigs. These tying posts allow you to adjust any Jig Pro Shop Professional Series Jig quickly and easily, as well as to terminate your paracord projects without the use of shackles. Durable solid aircraft grade aluminum will hold up for a lifetime of use! Attractive blue anodized finish Knurled for easy grip while tightening and loosening Compatible with the following jigs we offer: Jig Pro Shop Professional Series Jigs Jig Pro Shop Pro II Series Jigs Jig Pro Shop Ultimate 60" Jig In addition to being used on paracord jigs these locking nuts can also be used with any other application utilizing 1/4-20 threads.