This is the P3 "Ultra Hot" Turbo Glow Plug for use in the OS Max .21 VZ-R, V-Spec, .12 TR and .18 TZ/TM and other O.S. Turbo head engines.
Features:
Ultra Hot Type Plug Designed for reliable low speed and more torque at acceleration Suitable for 20% to 30% nitro fuel Ideal for novice drivers allows easy starts and better idling