Our 12-1/2″ x 2-1/4″ kick scooter inner tube is used on several mountain-style kick scooters that sport 12-1/2×2-1/4 tires A few of these include the Diggler Dirt Doggy, the Mongoose 12 Inch Expo Freestyle, and Trikke T12 Roadster 30 Day Warranty Description Our 12-1/2″ x 2-1/4″ kick scooter inner tube is used on several mountain-style kick scooters that sport 12-1/2×2-1/4 tires. A few of these include the Diggler Dirt Doggy, the Mongoose 12 Inch Expo Freestyle, and Trikke T12 Roadster. In addition, this kick scooter inner tube is also known to be compatible with a number of electric scooters. Looking for a more puncture-proof alternative to this standard inner tube Try our Heavy-Duty Thorn-Resistant 12-1/2″x2-1/4″ Inner Tube.