■特点：
☆不通孔回转油缸。
☆采用双活塞，可同时实现现两种动作。
☆是专用（汽车轮毂）卡盘理想的动力源。
■Specificity:
☆The cylinders are non-through-hole.
☆Adopting double-piston and can achieve two actions at the same time.
☆It is the ideal power source for the special (anto-mobile wheel hub ) chuck.