The Rule Delta 1 is the latest high-end product from Track, the leaders in asymmetric core design technology. This new Rule features the latest asymmetric design from the design team at Track. This powerhouse core features the industry’s largest volume flip block, shaped in an oval, to create the strongest intermediate differential in the Track product line. Wrapped in a solid version of the aggressive Goo LS, this will be the strongest sanded reactive resin product in the line. Delta 1, designed for medium to heavy oil patterns, joins the other high performance asymmetric weapons: pearlized particle Xception 5.0 for medium oil, its reactive resin counterpart, Xception for light to medium oil, and the high-load aggressive Rule GP2 for heavy oil.