Recommended for most current Glow engines with nitrometane and high compresion rate 2-stroke R/C engines. FEATURES: - Cold heat range plug for most model engine applications with Nitromethane. - Plug is short length, without idle bar. For all 2 stroke engines with Nitromethane an high compresion rate chamber. - Platinium and Rhodium Coil element. INCLUDES: One glow plug and one brass washer SPECS: Threads on the plug are 1/4-32.