Summer-Ray SS16 4mm Assorted Colors Hot Fix Rhinestuds In Storage Box 5760pcs (40 gross) of SS16 4mm size hot fix rhinestuds. These rhinestuds are made of anodized aluminum. 10 different colors as shown in the product photo. There are approximately 576pcs (4 gross) of rhinestuds for each color. Come in a plastic storage box with 10 compartments. Each compartment holds rhinestuds of a color. The plastic storage box measures approximately 5 inches by 2.75 inches by 1 inch in size. These hot fix rhinestuds are suitable to be used with a hot fix applicator too, as well as an iron or a heat press. The temperature for good adhesion depends on the type of fabric the rhinestuds are put on and the method used. For a start with a heat press, a temperature of about 210 to 250 degrees Fahrenheit (100 to 120 degrees Celsius) for 10 seconds can be used to begin with. For hot fix applicator, a higher temperature and a shorter contact time is generally used.