ALUMINA TITANIUM SPEC II BALLAST Sleek is an understatement. Alumina's Spec II Ballast measures in at 0.5 inch thin; coated matte-black, housed within a stainless steel case and weighing only 350g. Form is never without function. Alumina Enex Technology® maximizes size and performance to a new level. Utilizing delicate flat transformers and an external ignitor, built-in filters are used to minimize radiation interference while supporting a wide range input voltage (6~28V).