Quality Plastic Rotor Fan Blade for 4100 Cutting Machine and 110 Marble Machine Durable Construction: Made from quality plastic for strength, durability, and longlasting performance, even under frequent use. Precise Compatibility: Specially engineered to fit the 4100 cutting machine and 110 marble machine. Shaft hole size approximately 12 mm. Outer diameter approximately 50 mm for 4100 model and approximately 71 mm for 110 model, ensuring a secure and accurate fit. Enhanced Efficiency: Features 12 blades for the 4100 model and 30 blades for the 110 model, delivering airflow for cooling and consistent cutting or impeller performance. Quick and Easy Installation: Designed for straightforward replacement without complex tools or procedures, allowing you to get machines back in operation quickly. Practical Applications: Ideal for replacing worn or damaged rotor fan blades to restore machine cooling and operational efficiency. Suitable for workshops handling continuous cutting tasks where reliable airflow improves motor performance and lifespan. for stone or marble cutting where precision and consistent speed are essential for quality results. This rotor fan blade ensures your 4100 cutting machine and 110 marble machine operate efficiently, stay cooler during extended use, and deliver consistent performance with minimal downtime.