Includes (24) Spark Plug. Type: Standard, Reach: 9.5mm, Seat Type: Gasket, Heat Range: 7, Thread 14mm, Hex Size 3/4", New, Bulk Packed. Genuine OEM Replacement Part # CJ7Y-24PK. Consult owners manual for proper part number identification and proper installation. Please refer to list for compatibility. Compatible with the Following: ECHO: 652 750, EG550, ALPINA: 25, 30, 34, 34D, 42, 42D, 42F, 52, 52F, 550K, 550M, 56T, 66T, VIP21, VIP34F, VIP52D, ARIENS: BC350, BC460, LT210, TB220, TB260