Oil Slick Ball Minis Platinum Cured Medical Grade Silicone Containers, Set of 4 (Blue Set) A tiny version of our best selling Slick Ball Perfect for storing the stickiest extracts, a simple squeeze and release is all you need to snap the container away from the concentrate within. The Slick Ball Minis concentrate containers are made of Platinum Cured, Medical Grade silicone. The flexible material makes dabbing crumbly budders and water extracts easy Since nothing will stick to the container, dry or stable extracts adhere to your dabber, and not the dish Oil Slick concentrate containers are made of Platinum Cured, Medical Grade silicone