Autolite Genuine Small Engine Copper Core Spark Plug (24) Shop Pack, 64-24PK

Includes (24) 64 Spark Plugs. Thread Size: 14mm, Thread Pitch: 1.25mm, Seat Type: Gasket, Reach: 19mm (3/4"). Hex Size: 13/16" (21mm), Terminal Type: Removable Nut. Center Electrode: Material: Nickel, Type: Standard, Projection: Projected. Copper core improves resistance to fouling.