Description Used for brake systems of Pocket Mini Dirt Bike ScooterElectric Scooter Rear Disc Brake Caliper Kits 140mm Rotors For Mini Dirt Mini Gas or Electric Go Kart ATV Quad Mini Scooter Dirt Bike Specification Type Rear Disc Brake Caliper KitsMaterial Aluminium alloy materialType Rear disc brake and CaliperColor Black Caliper and Silver Brake DiscBrake disc diameter 140mmBrake disc Center Hole Diameter 30mm Fitment 34mm 140mm Brake Disc Rotor For 2 Stroke 47cc 49cc Engine Gas Electric Scooter Pocket Bike Mini Dirt Kids ATV Quad 4 Wheeler Note Please allow 1 3CM differs due to manual measurement Due to the different display and different light the picture may not reflect the actual color of the item Thanks for your understanding Package Included 1 X Rear Disc Brake1 X Brake Caliper