Product Description Henry's CODAN Syringes are smooth, accurate, and proven! Made with medical-grade polypropylene, the syringes contain no latex or rubber and are safe for multiple uses.The syringes contain a silicone O-ring that provides smooth and controlled dispensing, and the four-wing plunger design ensures balanced and stable handling. The syringes are easy to clean – wash gently with warm soapy water. Avoid excessive harsh scrubbing to preserve the ink markings. Compatible with Henry's Easy-Grip Nipples