Pen-size case offers convenient transport of pre-filled syringes; fits in pocket or purse. Interior safely holds syringe plunger in individuals preset position with approximate dosage. Holds most E-Z Ject, B-D, PharmaPlast and TERUMO syringes (not compatible with Monoject syringes). Contents: two impact-resistant, polypropylene cases (1 black, 1 white).