These decorative faux bolts are perfect for crafts where you're trying to achieve a rustic metal look. They can be glued to any surface using super glue or construction adhesive. These are made out of resin and each order includes a total of 12 faux bolt heads. I offer these in multiple combinations. With or without a washer, standard and large size, as well as 3 different finishes. Black, metallic, or rusted. (Sizes are measured from the shortest width) Standard size is a 0.5" bolt head. Medium size is 0.75" bolt head Large size is a 1" bolt head You can choose your finish! Black - Is made to be painted! If you are wanting to paint these yourself and have it any other color than silver, choose this one. Metallic - if you're wanting a standard new bolt head look. I'm a Marine Corps veteran running a small shop out of my home with my 3 not so little boys. If you have any questions or would like a something custom I would love to hear from you!