Fit for: / Razor MX350 Dirt Rocket Bike/ / Razor MX400 Dirt Rocket Bike/ / Razor ZR350 Dirt Rocket Bike/ / Razor SX350 Mcgrath Dirt Rocket Bike/ Fit for kids electric dirt bike pocket rocket mini bike scooter parts. Compatible with: / E-zip E500 Scooter/ / E-zip E750 Scooter/ / X-Treme X-560 Scooter/ Size: 12.5x2.75 (12-1/2x2.75) Inner Tube, Type: Straight Valve Stem. Package Including : 12.5x2.75 Inner Tube x 2, Valve Core Wrench x 1, Brass Valve Stem Cores x 2, Red Stem Valve Caps x 2. If you also have a dirt bike in use, Tire Tube are constantly worn out, and long term failure to replace the inner tube can lead to tire tube leakage. For the safety of your driving, please replace them promptly. Fit for: / Razor MX350 Dirt Rocket Bike/ / Razor MX400 Dirt Rocket Bike/ / Razor ZR350 Dirt Rocket Bike/ / Razor SX350 Mcgrath Dirt Rocket Bike/