Maximize your chainsaw's efficiency with the Replacement 20-Inch H78 20BPX Chainsaw Chain, expertly designed for a perfect fit with various ECHO models including the CS-4510, CS-590, CS-490-20, and CS-600P. This modern-style chain is a genuine ECHO accessory, ensuring compatibility and optimal performance with your machine. The chain's durable construction is geared towards extending your chainsaw's lifespan, while the 20-inch guide bar length and 10 oz weight offer a balanced and precise cutting experience. With no assembly required, this unit is ready to install right out of the box, allowing you to get back to work with minimal downtime.