Aluminum gearbox head, 10-tooth shaft, 25.4 mm diameter, compatible with FS straight-shaft brushcutters, replacement for OEM 4137 640 0100 & 4130 640 0100

Robust Aluminum Construction: Made from aluminum alloy, this gearbox head is designed to withstand harsh conditions while maintaining its integrity over time. Lightweight for Easy Use: With a significantly reduced weight compared to traditional models, this gearbox makes handling and installation easier for all users. Compatibility: The 10-tooth design and 1 x 4 mm shaft diameter make this gearbox suitable for most straight-shaft brushcutters, allowing for use with various brands. Quick Blade Changes: Square mounting holes allow for quick changes of trimmer blades and brushcutter heads, making your lawn care tasks smoother and more efficient. OEM Replacement: This gearbox is an excellent replacement option for OEM parts such as 4137 640 0100 and 4130 640 0100, ensuring seamless integration with your mower.