These are not your ordinary safety pins! This pack of 50 is a clever hybrid: they have a strong, self-adhesive sticky strip on the back AND they work like a traditional spring-loaded safety pin. Here's how they work: peel off the backing to reveal the adhesive, stick the pin firmly onto the back of a name badge, ID card, or a piece of fabric. Then, you can simply use the pin part to attach it securely to clothing without poking holes or using a separate lanyard. They're made of durable white plastic, 36mm long, and the spring mechanism is strong. Perfect for conferences, hotel staff, events, trade shows, or crafting (like attaching ribbons or flowers). The adhesive sticks well to plastic, metal, and even cardboard. A super handy, bulk solution for professional or DIY needs.