(BD) These sterile, disposable, double-end needles may be affixed to a holder with minimal danger of contamination. Multiple sample needles feature a rubber sleeve that covers the opening on the stopper-puncturing end of the needle and stops the flow of blood as the evacuated tube is removed. Packaged in plastic Hardpak with tamper-evident label. 100 needles per package, 10 packages (1000 needles) per case