* The pedal has step function, which can mount the tire accurately and time saving.
* The universal switch is 40A with a pure silver touching point, it can bear great
   load with a long using life.
* The mounting head is made of special steel, which is wear-resistance, unbend
   and unbreakable.
* The claw, crowbar, demounting head and bead breaking shoe are optional
   equipped with the protective cover. This can prevent the rim from being
   damaged for the operation incorrectly . 
* The protective sheath of the bead breaker is optional.