The Chainsaw Recoil Pull Starter Spring Replacement Part for your chainsaw engine is a must-have product. Made of a high-quality steel alloy, this part ensures durability and long-lasting performance. It features a 41mm inner diameter and a 5mm width, ensuring a comfortable and precise fit. The product is compatible with various chainsaw engine sizes, such as 45cc, 52cc, 4500, and 5200, and is designed to reduce recoil, making it easier for you to operate the chainsaw with one hand. This is an excellent accessory for enhancing the efficiency and safety of your chainsaw power tool.