It is a common accessory for trimmer lawn mowers. Made of high quality aluminum alloy and steel, it is sturdy and durable. There are two types of gears with different teeth numbers that you can choose according to your needs. It can normally be used for brush cutters, trimmers, lawn mowers, etc. This gear head would be a great replacement for your old or broken one. Product Description Features: This is a common accessory for trimmer lawn mowers. Made of high quality aluminum alloy and steel, it is sturdy and durable. There are two types of gears with different teeth numbers that you can choose according to your needs. It can normally be used for brush cutters, trimmers, lawn mowers, etc. This gear head would be a great replacement for you old or broken one. Specifications: < p>Number of teeth: 9 teeth Size: 26mm Material: aluminum alloy, steel Quantity: 1 piece Weight: approx. 555g Package includes: 1 x Gearbox