If you need a 72 Link #25 chain, Monster Scooter Parts has just what you need.
This size is the perfect fit for the Razor E100/E125 (versions 5+), E175 (all versions), and eSpark (all versions) electric scooters. It may also fit other brands.
It uses 72 links (36 inner links + 36 outer links). Chain this size may also sometimes referred to as a 72 pin chain.