Scooter Clamps / Standard vs. Oversized
See Clamps
Clamps for stunt scooters comes in two versions which are referred to as Standard and Oversized due to their diameter. Standard clamps will fit standard scooter bars with an outside diameter of 32 mm. They will not fit any aluminum bars.
Oversized clamps will fit oversized (HIC) scooter bars with an outside diameter of 35 mm. They will also fit aluminum scooter bars with the same outside diameter.
Some oversized scooter clamps come with a shim which can be used to fit a standard bar. Otherwise, they are meant to be used for oversized bars.