Choose which tree - yours or your opponents - to launch off of with Dedenbears Crossover Delay Box. Use the regular delay features to launch against your own tree or flip on the crossover when you want to leave off your opponents tree. You can even use one box to leave off your trees top bulb and one to leave off the bottom one. The box features push button thumbwheels (0.000-9.999) and a toggle switch to bypass the box completely. It can be used with any trans brake up to 45 amps and any ignition system