Tire Changers with Helper Arm (STA24H) 1. The complete bead breaker cylinder made of steel iron, more durable. 2. The complete clamping cylinder with 80 diameter, the seal ring and the piston are integrated, less resistance. 3. The complete gearbox made of aluminium, light and more durable. 4. Pneumatically operated tilting column 5. Simultaneous pneumatic horizontal and vertical arm locker 6. Capable of handling stiff, wide and low-profile tire 7. Right help arm 8. Pneumatic bead breaker 9. OPtional /A/ Rear air tank serves as tubeless tire inflating device.