great tool, safe way to stop your engine, recommended for all rc fans.
i use with a nitro buggy and attach to my thermometer. another cheap and practice product from HKThis tool serves to turn off the engine of RC.
With it you block the exit of exhaust fumes and so erase (off) the engine without running the risk of burning your hand.This is a wonderful product from HK, again. I no longer need to fanatically search and pinch the fuel line to stop my nitro car from running. I also do not need to use the tip of my shoe to stop the flywheel from turning.
I simply pluck this stopper into the exhaust pipe and the engine will stop running within seconds.