5040 pieces hotfix round black gemstone glass stone repair flat back rhinestone in 6 mixed sizes.<br> <br> <b>Product description:</b><br> The black flatback rhinestones are made of high-quality glass with 12-16 facets and flat backs; shiny black rhinestones add brilliance to your DIY shoes, clothing, hair clips, books or any other project.<br> <br> <b>Package includes:</b><br> 5040 x Flatback hotfix rhinestone<br> 1 x curved-tip tweezers<br> 2 x picking rhinestone pen<br> 2 x small storage box<br> <br> <b>Features:</b><br> Color: Black<br> Material: Glass<br> Technology: hot fix / glue<br> <br> <b>Diameter:</b><br> SS30 (6.5 mm)<br> SS20 (4.7mm)<br> SS16 (4mm)<br> SS12 (3.2mm)<br> SS8 (2.4mm)<br> SS6 (2mm)<br> <br> <b>According to the thermal parameters:</b><br> 1. Temperature: 160-180 degrees / 320-356 degrees Fahrenheit<br> 2. Time: 12-25 seconds<br> This temperature and time apply to cotton fabrics.<br> <br> <b>Notes:</b><br> 1. Each of our products is individually packaged and you can use it with confidence, but as the product is small, your child should apply under the supervision of an adult.<br> 2. These crystals are hot fixing, the hot fixing glue is already on the rhinestone, you can use the hot fixing tool to DIY them (hot fixing tools are not included).<br> 3. Our products are through strict quality inspection, but a few may have flaws. If you are not satisfied with our products, please feel free to contact us, we will solve the problem in the first time, and you can buy with confidence.<br>