Terumo's Surshield Safety Winged Needle Sets with One-Handed Activation provides a solution with a cost-effective, easy to use design. Press shield over the needle until it locks into place. -Unique needle locking mechanism helps reduce the risk of needlestick injuries. -One-handed activation for safety and ease of use -No change in needle insertion technique required -Simple, built-in safety design is easy to use -DEHP Free