【Specification Note】: Outer Diameter: 98mm/3.86"; Distance Between Mounting Holes (Center Hole to Center Hole): 77mm/3.23". Please check the product size carefully to ensure it is suitable before purchasing. 【Wide Compatibility】The recoil pull starter replaces 47cc 49cc 2-stroke engine. 【Premium Quality】: This mini easy pull starter is made of high quality and durable aluminum alloy and firm and flexible nylon braided rope, wear-resistant, rust-proof and durable for long-term use. 【Intelligent hollow cover design】: The pull starter adopts a clever hollow cover design, which can prevent gravel from entering the gears, causing jamming, and also allows wind to enter the gears for cooling to prevent the machine from overheating, which is very safe to use.