?Note? After a Certain Number of Times of Use, If Carbon Deposits (Dark Brown) are Formed on The Surface of The Platinum Heating Wire, The Ignition Point Will Decrease, Which May Cause Difficulty In Starting The Engine And Running Improperly. at This Time, a New Spark Plug Must be Replaced. ?Package?Include 1pc OS8 Glow Plug , Made in Japan.100% Original, Cooper Glow Plug Washers Included, Work in Most Non-Turbo Rc Car, Truck, Plane, & Helicopter Engines. ?Application?Mainly for 10 to 61 size engines For every applications Airplane Helicopter For sports & competition For R/C Aircraft: General purpose Engine Types: FP, LA, SF, FX, SX Series For R/C Helicopter: General purpose Engine Types: 46FX-H, 61LX-H, 32/50/61SX-H, 61RX-H For R/C Cars: General use: 1/8 Off-road racing Engine Types: 12/15CV, 12/15LD, 21RG, and 21RZ-V99b To Find more about Radio System R/C Car Kits & RTR Series Spare Parts, Hop Up Options Scale Models, Mini 4WD Tools, etc ?High-Quality Materials?100% Original Imported,Stable performance, Durable When Used Correctly ?Feature?This is The O.S. Engine Medium-Sized Glow Plug No.8, Which Is the Most Popular with the Most Two-Stroke Engines and Has Stable Performance.