Bow string wax, 100% beeswax with ultraviolet absorbent dye. Formulate for all synthetic string materials. Consists of a unique blend of silicone and synthetic wax for bowstrings with Vectran® such as 450 Plus and S4. ML 6 penetrates and lubricates all fibers both inside and out. 3" tube dispenser. natural bowstrings. 1 oz. tube.