The combined JY-520+JY100 is a brand new full-automatic tyre changer, is suitable for handing 10”-24” wide; low-profile and stiff  tyres. As a unit of two machines integrated, it works in accordance with customers` option.The cylinder control pedal works with step function, which can stop the clamp at any position. Protection covers are optional for the clamp, the crowbar, the mounting head and the dead breaker shoe. Which can avoid improper operation damaging,   Assistant installation holes have been made in for upgrade in future.