Designed to fit Silky Hayauchi( BlACK ) pole saws model 178-39 & 179-39, this ratchet-operated lopper head accessory offers precise, easy pruning of branches up to 2 inch diameter. The high carbon steel cutting blade has been fully heat treated and Teflon coated to ensure smooth cutting. Other features include a double pulley system and a 4 position ratchet mechanism that allows lopping of thick branches with minimal effort. ** INCLUDES A FREE HEAVY-DUTY STORAGE POUCH and EXTRA ROPE! ** Does not fit other models of Silky Pole Saws including Hayaye ( YELLOW ) models.