- Made of tinplate, lightweight, rustless, anti-corrosion, durable - Smooth surface, easy to print pattern [PACKAGE INCLUDING] 100pcs round button badge with safety pin(including 100 front and 100 back) , size is 6 * 4cm/2.4 * 1.6in(diameter and thickness), can insert in 5.4 * 0.02cm/2.1 * 0.008in photo/paper/logo. Standard size for you better to DIY [EASY TO USE] Button Badge can be assembled without a machine, you just need to put your picture, photo or logo between 2 covers and close the button tightly by hand, lastly tugged on the pin to check if they were snapped together. [DURABLE MATERIA] The buttons are made of clear sturdy acrylic, no abrasion, not friable, individually packaged.