Mumusuki 26mm Diameter Gearbox Head Brush Cutter Trimmer Replace Hole Gear Head Universal Lawn Mower Accessories(26, 7 Teeth) Replacement:This gear head would be great replacement for your old or broken ones Use For:It can be normally used for brush cutters, trimmers, lawnmowers, etc Universal Gear Head:This is a common type gear head box accessory used for lawnmowers,suitable for 26mm gasoline brush cutters Specifications: Teeth Number: 7-teeth, 9-teeth (Optional) Size: 26mm/1in Material: Aluminum alloy, steel Quantity: 1pc Weight: 555g(approx.) Package Includes: 1 x Gearbox