... 1)Professional Manufacture 2)ISO & CE approval 3)Full sizes: 18G, 20G, 21G, 22G, 23G, 24G, 25G, 26G, 27G Scalp ... during long term infusion2)Butterfly wings can make better handling and attachment to skin3)Thin wall needle make better flow ... ETO gasscalp vein set needle highly sharp needle point smmoth,less pain to patientintravenous infusion needle/scalp vein set needle/ butterfly needle1/ Materials: ...