GIVE YOUR PROMOTION A SHOT OF EXCITEMENT WITH THIS SYRINGE SHAPED PEN! CLICK THE PLUNGER TO USE PEN AND RETRACT IT WITH THE TAB ON THE SIDE. BLACK INK. IT IS FILLED WITH VARYING COLORED LIQUID FOR AUTHENTIC SYRINGE LOOK. INCLUDES FLUID MEASUREMENTS ON ONE SIDE. GREAT FOR NURSING SCHOOLS, DRUG COMPANIES, DOCTOR'S OFFICES, HOSPITALS, MEDICAL INDUSTRIES, HEALTHCARE, AND MUCH MORE! 5" L X 3/4" W