Each package contains 1 color of rhinestones from our ZCH color type. It's fun and easy to add bling and glitz to your next project. Use Bedazzler or Gemagic plunger #20. Fabric goes face up over the setter plate. Position where you want to place the stud. Press down firmly until the prongs bend. The prongs pass through the top of the material and are folded over by the grooves in the setter plate, locking them onto the fabric from the back. These rhinestones are preset in the rim for 1 step application with your Bedazzler or Gemagic. The prongs are long enough for single layer of denim or double layer of T-shirt cotton fabric. The rims are made of a non rusting copper alloy and the prongs are easy to bend. You can also set these with the Allstarco GU50 rhinestone setter using die MD5T or MD5.5B. If setting by hand you can use a small improvised tool such as the the eraser end of a pencil.