I plan on adding 100-120 cages to my barn (in banks of 3-4) over the course of a few months. This is a lot (A LOT) of J clipping. Bass has a gadget called The Ringer (http://bassequipment.com/Cages/Cage+Assembly+Tools/default.aspx) and I'm thinking about getting it. Has anyone here used it? Or, for that matter, does anyone use the C rings instead of J clips? I've heard they don't rust as quickly because they don't hold in moisture like the J clips, but I still question the durability of them.