Safety syringe Specification:0.5ml, 1ml, 2ml, 3ml, 5ml, 10ml Sterile:by ... :0.5ml, 1ml, 2ml, 5ml, 10mlAdvantage: after injection, press the plunger gently, and then the needle will be automatic retracted into ... line after enter into body;4).Pull out syringe from body and press the plunger gently;5).The needle will be automatic ...