Product parameters: Material: Metal color: silver Size: outer diameter 150mm, inner diameter 25.4mm Areas of application: breeding, aquaculture, forestry, agriculture Package list: 1 spool of lawn mower line. Product Description: Sharp Cutting Wheel: Designed to effectively remove grass from lawns, gardens and driveways, making it ideal for mowing heavy areas. Rust Removal: Comes with a disc that can be used to remove rust from metal surfaces, adding value to the product. Gearbox Blade Nut Kit: Includes M10 fixing kitto connect saw blades and cutting heads to the lawn mower, making it compatible with multiple models. Straight tree feller: can be easily installed on a straight tree harvesterto improve its performance and versatility. Perfect size: Compact and lightweight, with dimensions of 150mm x 25.4mm, making it easy to handle and use.