... " x 1.75" Puncture Resistant K-shieldRim: Aluminum alloy double wall and CNC size wallFront Fork: Aluminum alloy suspension fork, ZoomFront Brake: Disc BrakeRear Brake ... Bar: Zoom, Aluminum alloy, ZoomStem: Zoom, Aluminum alloy, adjustable ZoomBrake Lever: Aluminum alloy with power off switch. WUXINGChain: Rust resistant chainChain Wheel: Alloy 44T, aluminum alloy crankMudguard: PP PlasticRear ...