The SH Engines T33 Turbo Glow Plug is a "Hot" plug recommended for .12 to .21 size engines running 10 - 36% nitro in cold weather conditions.

SH Plugs:

• SHESE006TS0: T33 Turbo Plug, "Hot" plug recommended for .12 to .21 size engines running 10 - 36% nitro in cold conditions.
  
• SHESE007S0: T4 Turbo Plug, general purpose "Medium" plug recommended for .12 to .21 size engines running 10 - 36% nitro.
• SHESE008S0: T5 Turbo Plug, "Cold" plug recommended for .12 to .21 size engines running 10 - 36% nitro in hot conditions.