The Cauldron Jig is a 3 vane advanced fletching system. It provides the right amount of pressure for excellent adhesion, and you can fletch all three vanes at once so it's a big time-saver. The snap-in inserts are easy to change and don't require tools, so you can switch from a three degree right helical to a one degree right in no time. With this jig you can leave the nock on your arrow so you don't need to change the center post - simply twist the dial at the bottom of the jig to rotate your arrow for perfect indexing.Specifications and Features: