OS Engines 71608001 #8 Glow Medium Plug 086093329617 Designed with safety in mind:

Designed with safety in mind: the removable control plug clicks when inserted correctly

The "nuts and bolts" appearance may lull you into believing this to be a straightforward cast metal brainteaser puzzle

such as classic scallops

metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings

OS Engines 71608001 #8 Glow Medium Plug 086093329617 Designed with safety in mind:Brand OS Engines Model OSMG2691 A favorite for most 2 stroke engines The platinum alloy coil holds heat without idle bar and reduces heat related failures Recommended for most current O. S. (and other brands of) 2 stroke R C engines Medium heat range plug for most model engine applications Includes one glow plug and one brass washer Choose the #8 plug for top performance in virtually any application. The platinum alloy coils in O. S. plugs hold heat