This locking pin back is made of premium iron material, which can withstand use. Features the premium iron material, which has high durability, not easy to deform. Fine workmanship, ensures practicality. This locking pin back will make DIY easier and smoother. Features -Color:Black -Material:Iron -Size:1.00X1.00X0.50cm/0.39X0.39X0.20in - Butterflies shaped handle design, easy to grasp and easy to carry, very practical for diy use. - With smooth opening and closing, the pin back is well secured, and practical to use. - Can be used in tie tacks, lapel pin, badges, service bars, and jewelry making, or other DIY crafts. - Special design and pin back is in fine craftsmanship. The best replacement for your old, broken one. - The brooch back pin is manufactured with professional technology to ensure the product can work for a long time. Package list: Pin Backs