The brooch Pin Back features a mechanical rotating clasp design that opens and closes smoothly by flipping the switch. Compared to standard pin backs, this locking mechanism offers enhanced security to help avoid accidental detachment. The pin Back is made of stainless steel, offering greater strength and durability compared to regular metal materials. It resists bending and breaking, and its rust- properties significantly extend the lifespan of the pins. Each brooch pin is crafted with meticulous for smooth and easy opening and closing. Both the pin tip and clasp are polished to a bright silver shine-no burrs, no snagging. The smooth tip passes through fabric easily, ensuring a seamless and satisfying crafting experience. 50 PCS Pin Backings with Clear Box: Each bar pin measures 1.5 inches (38mm), and every box includes 50 silver pin backs neatly packed in a refined clear hard case. Unlike common soft boxes or plastic bags on the market Our 1.5 inch bar pin backs with secure clasp design are ideal for badges, name tags, and corsages. Perfect for jewelry making, they work well with beads, dangles, and findings. Whether you're into craft projects or making name badges, these pins offer a and wide compatibility. Color: As shown Material: Metal+Plastic Package Contents: 1*set brooch pins Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.