Although it is new and unused, a small, inconspicuous scratch was made on the mounting hardware when temporarily attached. Installation is done by clamping it to the chain stay with the included clamp, or by directly bolting it if a mounting base is available. (Installation may not be possible depending on the shape.) Please check the photos for the condition. There are no smokers. No dogs, cats, or birds are kept. Center Stand Mounting Hardware: Width 6cm x Depth 4cm Height Adjustable Applicable Tire Size: 24 inches ~ 29 inches Height: 33cm ~ 37cm Width: 22.5cm ~ 25cm Weight: 711g