The trap door prop is a rod to hold the trap door open. Available in two sizes for 12" wide or smaller traps and an XL version for Dog, fox and bobcat traps. Simply open the door and slide the prop through the trap directly under it. Propping the spring loaded door open makes baiting a single door trap and releasing animals from a single door trap much easier. This tool also makes accessing the inside of the trap for any maintenance easier. This prop is also excellent at holding open large double door trap doors for easy setting while you lift the front door. This product ships for free within the USA.