Attention crafters, DIY fashionistas, and bling lovers! This is a massive bulk pack of 2880 fiery red hotfix rhinestones. These aren't your average plastic gems - they're made from glass/artificial crystal with high-precision, multi-sided cutting. That means they catch the light from every angle and sparkle like crazy! They're the SS16 size, which is 4mm in diameter (a great versatile size), and have a flat back. The 'hotfix' part is key: the backs are coated with a heat-activated glue. You use a special hotfix applicator tool, a household iron (on the right setting), or a heat press machine to melt the glue and permanently attach them to fabric. They're perfect for customizing literally anything: jazz up plain t-shirts, denim jackets, shoes, hats, dance costumes, tumblers, phone cases, resin projects, and so much more. The red color is vibrant and runs through the entire crystal so it won't fade. The pack comes with a huge quantity, so you can go wild with your designs. Remember, you'll need tweezers or a wax pick-up pen to handle them, and for non-fabric items, you can also use strong glue like E6000. The seller has 20 years of experience and offers support if you have questions. Get ready to add some serious sparkle to your world!