Hitech 86mm Standard Adapter - 100mm Filter HolderThe Hitech Standard Adapter rings are made from machine crafted aluminium and are designed to fit onto the end of the lens to allow the use of the Hitech 100mm filter holder. This particular adapter has been made to fit directly onto the end of a lens that features a 86mm thread. Once the adapter is in place you can then attach the Hitech 100mm filter