Details: Perfect for your store countertop or science classroom or STEM activities in a fun way. Fully functional pens with a fun syringe design to boot. All pens have black ink. For writing purposes only – do not attempt to inject classmates friends… Package includes 24 syringe design pens. PMLAND Brand Philosophy PMLAND values our customers by keeping YOUR shopping concerns in mind, therefore, we deliver products with our best: CREATIVITY for your convenient use and fun experience QUALITY by using durable materials, delivering best-in-industry design and monitoring on manufacturing packaging control SUSTAINABILITY by supplying environment-sustainable, family-friendly, safe and healthy choices. We take great pride in the products we supply, that s why we offer a 100% Satisfaction Guarantee. NOTICE: PMLAND is a registered trademark with the USPTO in USA. Make sure you are only purchasing from PMLAND to avoid any product quality problems.