Features: 26mm inner diameter of the housing. The gearbox has a left external thread of 10 x 1.25. Made of aluminum alloy + steel material, low density, high strength, strong conductivity. Lawn mower accessories, universal head gearbox and complete accessory set. Features: Condition: 100% Brand New Material: Aluminum Alloy + Steel Color: Red + Ribbon < p>Diameter: 26mm Tooth Quality: 9 Package Included: 1 x Gear Head Note: 1. Due to manual measurement, there may be 0-1 inch deviation. Thank you for your understanding. 2. Since monitors are not calibrated same, item colors displayed in photos may be showing slightly different from the real object. Please take the real thing as standard. Made of high quality aluminum alloy and steel, corrosion-resistant, anti-oxidation and durable. The surface of the lawn mower replacement gear is coated with red paint, which is rust-proof, beautiful and durable. Applicability: generally suitable for brush cutters, trimmers, lawn mowers, etc.