Grand Rapids Scooter's 

NGK CR7HIX Iridium Performance spark plug for various makes and models.
 
Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life.

Supported Models: Bintelli, Tao Tao, Peace Sports, Wolf, Schwinn, Puma, SYM, Alliance, Motorino, and Kymco.

Specifications:

• Thread Size: 10mm
• Reach: 12.7mm (1/2 inch)
• Hex Size: 16mm (5/8 inch)
• Gap: 0.7mm (.028 inch)
• Heat Range: 7
• Does not include terminal nut