I lost my Unagi tool key! Where can I purchase a replacement? Betmig April 22, 2021 01:03 Not to worry! What you're looking for is a 3mm hex key and you can purchase it here. Related articles How to unlock the speed limiter in the V3 I just bought a scooter as a gift. Will the recipient know the cost of the scooter? Are our scooters UL Certified? How does someone know if they should go for a M or L helmet size? How long should my tires last?