This is the OS #8 Glow Plug for 2-Stroke R/C Engines. The O.S. #8 glow plug is the most widely used O.S. glow plug. This works with most 2-stroke aircraft engines, as well as some 2-stroke car and truck engines.
Includes: One glow plug and one brass washer
Specifications: Threads on the plug are 1/4-32