Rubber piston for syringe Size: 1ml 2ml 3ml 5ml 10ml 20ml 30ml 50ml 100ml are avialble Material: Latex rubber (natural) and latex free rubber(isoprene) Packge: Carton Packing: 1*20 960pcs ( 1ml 80000pcs/carton 3ml 35000 5ml 15000 10ml 10000 20ml 5000 50ml 2000) Ring: Two rings or three rings or make as your requirement Top: Flat top and conical top are available Note: We are a professional rubber piston manufacturer, so we can promise best quality, on-time delivery, best after-sold service, and we can make new moulds as your requirement.