Comstock Series Traps have powerful trap doors. This tool makes setting the trap door easy by allowing you to easily lift the door with one hand and set the door trigger hook with the other. This handy setter not only makes setting the Comstock powered door cage traps fast and easy, it allows for the easy release of captured animals too. The handle keeps your hand up and out of the way, well above the trap as the trapped animal exits the cage. Of course, Comstock cages do not require the use of a setting tool, this just makes setting easier and releasing animals safer.