Multiple styles of crystals: The flat back hotfix rhinestone set includes clear rhinestones (6 sizes), AB rhinestones (6 sizes), totaling 1288 pieces, and 12 colors of hotfix rhinestones (SS12), totaling 1728 pieces. Each size and color are separated into a grid. Premium Rhinestones: The crystals are made of high-quality glass with multi-faceted sides. They are hard and do not break easily. The surface is precisely cut, the bottom is thinner, and they reflect light. Rhinestones may vary in color when viewed under different lighting conditions or from different angles. Tools for rhinestones: Includes a pair of black tweezers and a rhinestone wax crayon. The tweezers have a tapered, well-aligned tip that securely grips and places rhinestones with calibrated tension for better control, making it easy to apply rhinestones in jewelry making and craft projects. Easy to Use: These hotfix rhinestones have a heat-activated adhesive on the bottom that melts and bonds with heat. Use a applicator or iron for application. Suitable for decorating most surfaces such as fabric, metal, and plastic. For non-heat applications on surfaces like skin or nails, adhesive glue is required. Wide Range of Use: This rhinestone set includes a variety of colors and sizes of round glass crystals. Ideal for DIY decoration on clothes, hairpins, shoes, books, license plates, tablets, handbags, purses, belts, cell phones, and more. Features: Material: Glass Color: Multiple colors Dimensions: SS6 (2mm) 432pcs 2 grids SS8 (2.4mm) 288pcs 2 grids SS10 (2.8mm) 288pcs 2 grids SS12 (3mm) 1728pcs 1 box (12 colors) SS16 (4mm) 144pcs 2 grids SS20 (4.8mm) 100pcs 2 grids SS30 (5mm) 36pcs 2 grids 1. Each glass rhinestone is shiny and sparkling, with high-precision cross-sectional dimensions, multi-faceted cutting, high brightness, and no air bubbles. Ideal for nail art and other crafts. 2. The crystals are made of high-quality glass with multi-faceted sides. They are hard and durable. The surface cut is precise, with a fine backing that reflects light, providing lasting brilliance and shine. Package includes: 1 box of Crystal AB rhinestones, 1 box of clear crystal rhinestones, 1 box of 12 multi-colored rhinestones, 1 wax crayon, and 1 stainless steel tweezers. Note: 1. Each product is individually packaged. Due to the small size of the items, children should use under adult supervision. 2. If the rhinestones do not adhere properly, apply heat with an iron for a few seconds to fully melt the adhesive.