Features: Universally compatibility with 50 heavy duty equipment keys, solving multi brand ignition needs while reducing downtime risks across construction and agricultural machinery. Features plastic metal construction where reinforced steel cores resist deformation under extreme stress, paired with textured plastic grips for fatigue less operations during prolonged maintenance tasks. Built for equipment operators, fleet managers, and repair technicians managing mixed brand machinery fleets who demand fast access to ignition systems without brand specific limitations. Critical for construction sites, farmlands, or workshops requiring rapid equipment activation from excavators to tractors to maintain workflow efficiency during urgent repairs or routine servicing. This set eliminates single key dependency with its weather resistant design optimized for harsh outdoor environments and high frequency usage. Specifications: Component: Combined with plastic + metal Size: 14x20x5cm/7.87x1.96inch Practicality: Designed for professional maintenance technicians and equipment managers, it is convenient and quick to identify and operate ignition systems for different equipment. Package Includes: 50pcs Maintenance Key Collection note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.