Includes (2) Spark Plug. Type: Standard, Reach: 11.2mm, Seat Type: Gasket, Heat Range: 10, Thread 14mm, Hex Size 13/16", New, Bulk Packed. Genuine OEM Replacement Part # H10C-2PK. Consult owners manual for proper part number identification and proper installation. Please refer to list for compatibility. Compatible with the Following: ECHO: EG4600, ONAN: 7CCKM21RV, 7CKM21RV, 7CM21RV, CCK, CUB CADET: 100, 1000, 102, 104, 105, 106, 107, 108, 109, 1100, 1200, 122, 123, 124, 124, 1250, 126, 127, 128, 129, 1450, 147, 149, 1650, 4814R, 800