This is a REDS Engines TS6 "Cold" Turbo On-Road 1/8 Scale Glow Plug. The TS6 glow plug has a cold heat rating and is ideally suited for .21 On-Road engines. Due to the use of an updated material for the incandescent filament, higher stability under all weather conditions is achieved, and at the same time, better engine performance.

The outside temperature can be between 15-40°C (59-104°F) and developed for up to 16% nitromethane model fuel.