Rebound 25 is an easy-to-use platinum-cure silicone rubber which self-thickens for making brush-on molds of almost any model. Mixed 1:1 by volume means no scale necessary. Rebound 25 can be applied with a brush or spatula to vertical surfaces without sagging and will cure with negligible shrinkage to a flexible rubber. Reound 25 is soft, flexible and is good for making models with deep undercuts. For more information please visit Smooth-On.com.