Our hat pin backs are made of metal and are designed for long lasting use. They measure approximately 1.2 inches in length, with a 10mm diameter pin that goes through your material. These are lead-free and nickel-free. Our rubber pin backs will securely hold your badges, lanyards, name tags, and more. These are also known as clutch backs. These pinbacks can be used on all types of garments, including jackets, hats, scarves, blankets, purses, and more. These are perfect for craft projects, and can be used by both adults and kids. Please note that the actual color of the items may slightly differ from the above images due to different computer screen, thanks for your understanding.