CHAIN FOR 4 MINI CHAINSAWS: These 4 replacement chains fit all 4 cordless mini chainsaws. Original 4" rechargeable chainsaw accessory chain. SHARP TEETH: This 4 inch mini chainsaw chain with sharp, wear-resistant teeth cuts more efficiently and faster. High hardness, carving chains are not easy to break. Durable and practical, it can bring you great convenience and save your time. SHARP AND STRONG CHAIN: The 4 inch mini chainsaw replacement chain is deep hardened to ensure smooth cutting and optimal lubrication. The life of the saw chain is longer, light, wear-resistant and smooth cutting. EASY TO INSTALL AND REPLACE: The 4 inch mini chainsaw chain with lightweight and small design is easy to replace and install. Simply remove the original chain, replace the new chain and finally tighten the bolt.