quality racing spark plugs with high performance Three electrode head, special electrode material, and strong spark, gives Spark Three paths to follow, specially designed to increase engine performance. Replace the following spark plug; for : C7HA, C7HSA, C5HA, C5HSA, C5HSB, CR5HS, CR5HSA, CR5HSB, C6HA, C6HSA, CR6HS, CR6HSA : U22FS-U, U16FS-U, U16FS-, U16FSR-, U20FS-U, U20FSR-U, U22FSR-U; for : PZ7HS, Z10, Z12, Z8 Z9Y This spark plug is a high performance peformance electrode spark plug.; Mainly for 110cc 50cc 150cc 125cc engine. Name:Spark Plug Model Name: A7TJC-F2Q001 Fit:For GY6-50cc, GY6 -150CC Thread Diameter-10mm Hex Size-5/8 Inch colour: Random Color (Random color, don't accept the specified color.) Material:Metal Package Contents: 1 * Spark Plug Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.