A Flutter Valve Injection set which includes a metal syringe head and needle, a black rubber connecting cup and a tan rubber hose. It comes in a green cardboard box. " THE / NATIONAL DAIRY ASSOCIATION / OF N.Z. LIMITED. / FLUTTER VALVE / INJECTION SET " is written on the lid of the box. " N.D.A. / FLUTTER VALVE / INJECTION SET " For direct injection from / original containers / The rate of flow may be / controlled by raising or / lowering the bottle. " is written on a cardboard square at the base of the box.
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