Coltene - Hygenic Plastic Wax Strips - 6" Long, Light Green, Lightly Scented, Pre-formedUsed for peripheral lining and impression tray stops Adheres to hydrocolloid materials Does not require heat during use Softer consistency minimizes tissue displacement Plastic Wax Sticks adhere to hydrocolloid impression materials without the need for heat when used for post damming, peripheral lining, and impression tray stops. They readily form and have a softer and tackier consistency than Round Wax Strips for lesser tissue displacement.