Includes (1) 20F0AD3378C Guide Bar. New, Bulk Packed. Genuine OEM ECHO Replacement Part . Consult owners manual for proper part number identification and proper installation. Please refer to list for compatibility. Compatible with the Following:Echo: CS-4600, CS-5000, CS-520, CS-530, CS-450, CS-450P Customer favorite. Highly rated. Reliable and durable. High quality guaranteed.