Material - The brush cutter gearbox is made of high-quality aluminum alloy and steel. It is rust-proof, corrosion-resistant, and has excellent oxidation resistance. Available Specifications - There are four sizes of gearboxes: 26mm inner diameter + 7 splines; 26mm inner diameter + 9 splines; 28mm inner diameter + 7 splines; 26mm inner diameter + 9 splines. You can choose according to your needs. Replacement Part - The brush cutter gearbox is the ideal accessory for the trimmer; it would replace your old or broken one very well. Compatible - The brush cutter gearbox can normally be used for brush cutters, trimmers, lawn mowers, etc. Easy to replace part, it is simple and convenient to connect the trimmer. Wide Application - The lawn mower gearbox provides stable performance and good working conditions, ideal for gardening, agriculture, animal husbandry, breeding, and forestry.