The O.S.#6 (A3) glow plug is similiar to the #8 plug only more economical.FEATURES: Hot heat range plug for most model engine applications.Works well in any two stroke engine from .10-size to .60 Thick, solid platinum coil resists meltdowns and premature failure Coil holds sufficient heat for a smooth idle Finest glow plug in the economy price range No Idle Bar YOU WILL RECEIVE: One OS #6 (formerly A3) glow plug One glow plug ring JAL 6/6/96ir/jlother plug info updated tjt 032105updt jxs 4/14/09 &