Blood collection needle holder is compatible with Multi-Sample Needle to collecting blood.

Lock the multi-sample needle short end which is with latex cover directly into holder

Insertions finish when you push the white part of the snap.

After collection finished, press the green color button on holder, needle automatically discharge. Collector can easy finish collection without touch of needle and avoid mistake puncture.

It is non-dangerous products, non-flammable, non-explosive, and can be stored at room temperature.