Duratrax has now introduced new Glow Plugs that are more suited to rigors of R/C Car Racing. FEATURES: Increased durability (longer life span of plug) All hand assembled with solid coils of heat resistant metal Color coded for easy identification This plug is suitable for 1/10 and 1/8 scale off-road racing YOU WILL RECEIVE: One Gold Racing Glow Plug One brass gasket COMMENTS: Silver Sport: Hot plug for low-nitro applications Carbon Speed: Medium Hot for informal racing and sport use Gold Racing: Cold Plug for competitive racers and higher nitro fuels kh10-23-01 ir/kh &