BD Vacutainer Eclipse Blood Collection Needle - Green 21g 1in - pack of 50Intuitive design featuring anti slip ridges, natural thumb fit and ergonomic lip for ease of use, comfort and complete user control Built in safety shield in alignment with the bevel of the needle permanently and securely locks in place after blood collection Full integration of holder and needle reduces the risk of holder end needlestick injuries and improves efficiency of the blood collection process Flashback chamber provides immediate confirmation