The PVA Mesh Threader is an essential tool for easily threading your underlead through a PVA Mesh bag. When your underlead is loaded with components like Anti Tangle Sleeves, Putty, or Bottomliners, it can be nearly impossible to pass it through the bag. Now, with the PVA Mesh Threader, the hole is generously sized, allowing you to pull everything through with ease. Yes, it really works!