Toy Cubby Fake Blood Needle Syringe Pens - 24 pieces 24 pieces Fake Blood Needle Syringe Pens. each pen measures 5 inches, filled with fake blood syringe. Great decorations, props, gift to your loved ones or at a giveaways in the office, a cool treats for your students to help them get motivated to finish their school works or projects. Great decorations, props, gift to your loved ones or at a giveaways in the office, a cool treats for your students to help them get motivated to finish their school works or projects. Amazing party favors, helps to add more fun and excitement at party, children will love these and also adults. Safe and easy to use with a single push of the top, tip of the pen will show up and you can write memos, letter, list or notes for more fun and laughter, small button to retract and hide the tip.