1 Free BarTech test focus ring. Free shipping worldwide, pleas choose customer pickup by ordering. I would like to have you post a foto on Facebook and a leeve a comment there about this product. The Focus Ring is made on an 3D Printer, the outside is mashiened on an late mashin and clear coated. The ring can be cleaned after use with all regular clening fluids and or with Aceton. The ring is availebal in white or glow green in the dark.