Yanmar tractor owners, if you need spare keys or replacements for lost originals, this 2-pack is exactly what you need! These aftermarket keys are compatible with Yanmar models EX450, EX2900, EX3200, SC2400, and SC2450 - perfect to have as backups or if you've misplaced your original key. The part number 52160 matches the OEM specification, so you're getting a key that fits and works exactly like the factory original. The quality is solid - they turn smoothly in the ignition without the stiffness or fit issues that sometimes come with cheap aftermarket keys. Having two keys means you can keep one as a spare in your toolbox or give one to another family member who might also use the equipment. Seriously affordable compared to dealer prices, and you get the peace of mind of having backups when you need them. Just make sure your specific Yanmar model matches the compatibility list before ordering. A simple but essential item for any tractor owner - because losing your only key can really ruin your day!