New high quality racing spark plugs with high performance three electrode head, special electrode material, long life and strong spark, providing three spark paths to enhance engine performance. Replaces: C7HA, C7HSA, C5HA, C5HSA, C5HSB, CR5HS, CR5HSA, CR5HSB, C6HA, C6HSA, CR6HS, CR6HSA, U22FS-U, U16FS-U, U16FS, U16FSR, U20FS-U, U20FSR-U, U22FSR-U, PZ7HS, Z10, Z12, Z8, Z9Y High performance electrode spark plug designed for 50cc, 110cc, 125cc, and 150cc engines. Name: Spark Plug Model Name: A7TJC-F2Q001 Fit: For GY6-50cc, GY6-150cc Thread Diameter: 10mm Hex Size: 5/8 Inch Color: Random Color (color varies, no specific color selection available) Material: Metal Package Contents: 2 x Spark Plug Note: Light and display differences may cause slight variations in color between the image and actual item. Measurement may vary by +/- 1-3cm.