This 12mm Iron-On Large Pyramid Trim has an adhesive backing that makes for a very easy attachment. Follow our simple steps for the best outcome. Lay the trim on your desired fabric, and place a piece of cloth between the iron and trim. Leave the iron on top of the trim for 1 minute so the adhesive will activate. The iron should be on high with no steam. This trim will add the perfect touch to your basic garments and decorative home fashion pieces. Get creative with this trim by cutting the trim into separate nailhead pieces then attaching them to different sections of your garments and projects. Avoid using this trim on leathers, vinyl and plastic materials. Available in four metallic styles.