This is the mold to make an air-powered soft robotic gripper out of silicone rubber based on the directions in this Instructable: http://www.instructables.com/id/Air-Powered-Soft-Robotic-Gripper/See Instructable for detailed directions. If you are printing this mold or ordering it from a service like Shapeways, make sure you go for a smooth, glossy finish. It will be very difficult to de-mold silicone rubber from a rough surface.