High-performance design and high air-to-low noise ratio. Able to withstand high temperatures. Easy to install and use. Easy to disassemble and clean. Plastic fan blade only, other accessories in the picture are not included! The distance from the shaft hole to the blade is 190 mm (there may be a small error due to manual measurement), the same size can be used regardless of the brand. Suitable for most fans, such as standing pedestal fans, which easily meets your different needs.