... operate with Vertical lift press tire cylinder FUNCTIONSSemi-Automatic Car Tyre Changer1. Square Shaped Column, Swing Arms type, Rotate ... Two sets of clamping cylinder assembly.5. Dual role bead breaker shoe control cylinders.6. 3 Alumina alloy foot pedals.7 ... bead breaker vertical cylinder, control rotating arm, its more convenient, fast,Safe and save more. energy when helping The hard tyre ...