Manufactured from lightweight plastic, the Pulla Bung enables the angler to pull the elastic tighter after unshipping the top kit. The advantage is that you can use lighter elastics for small carp, but tighten it for netting if you hook a bonus fish. This means you don't need to play and net big carp on top 5s or 6s, which leads to better control, faster netting and less pole breakages.