Reli Safety Blood Collection Sets are OSHA compliant, Blood flashback seen clearly through tubing, Audible click when needle is in final lock position, Siliconized short bevel needle for smooth insertion. Flexible, color-coded wing for improved tactile feel and easy gauge identification, Single-handed safety shield activation for convenience and ease of use, Activation of safety shield while needle remains in vein for reduced risk of accidental needle stick injury, Computerized grinding and 100% visual camera inspection ensures sharp, consistent, quality needles, Without tube holderNon-Sterile. This product must be used for educational, training, or non-clinical research purposes only.