Fox Glow Plugs have won universal acceptance.FEATURES: Gold-Plated Core Pieces that Eliminate Weld Failures Rhodium and Platinum Elements which Make the Plug Idle Better Machined-On Idle Bar Can Not Fail since it is Welded Exclusive Fox Insulating makes it Resistant to 1800ºF Glow Plugs Perform Well and are Less Susceptible to weather, temperature, and fuel.INCLUDES: One R/C Long Glow Plug w/ Idle Bar One Copper Washer ir/jl