... machined,SCS collar clamps,4130 Chromoly bar,aluminum deck,flexi brake,metal core,anodized color surface finish! 1/Handle Bar ... & Tube: Chromoly steel,360 degree rotation 2/Deck & Construction: Aluminum ... 5/Headset:high-end treadless headset 6/Wheel core:metal core,100/110 * 24mm7/Outer tyre:88a ... 4pcs/master carton fixed bar ultra Pro kick scooter