This is a set of four packs of Perfect Parts MOUNTING PINs, model P818, ideal for dissecting and mounting specimens. The pins are of high quality and precision, ensuring that your work is carried out smoothly and effectively. They are compatible with a variety of laboratory equipment and are perfect for professionals working in the healthcare, lab, and dental industries. The pins come from a trusted brand and are designed to meet the highest standards. They are a must-have for anyone who wants to achieve the best results in their work.