... , 5ml, 10ml, 20ml, 30ml, 50ml, 60ml, 100ml ColorBlackMaterialnature rubber, synthetic rubber(polyisoprene, rubber butyl rubber), silicone rubberFunctionit is a part of disposable syringe, highly ... bacilli, no toxicityPacking Poly bag and carton, or according to customer's request If you are interested in our products, please ... us. We will do our best to serve you. Medical Rubber Piston for Syringe