Funny Party Hats Syringe Pens in Assorted Colors - Pack of 12 -Party Favors by These Cool Ballpoint Pens are Just the Thing for Taking Notes in School The Cartridge is Surrounded with Colorful Liquid That Sloshes Around as You Write With This Funky Syringe Shaped Pen These Make Excellent Party Favors, Especially for a School or Medical Themed Party This Set of 12 Retractable Novelty Pens is a Great Gift for Doctors and Nurses, and Medical School Graduations The 5 1/2" Retractable Ball Point Pens Write Easily and Smoothly in Black Ink. Three Blue, Three Red, Three Green and Three Yellow Pens are Included in this Great Set