Molotow Series A Refill Extension. The idea of the new MOLOTOW™ Refill Extension ring has totally revolutionized the refill technology of our pump markers. Never again greasy hands and even the mixing of new color shades becomes child’s play. MOLOTOW™ pump markers can now be upgraded with the MOLOTOW™ Refill Extension ring. At a time where raw materials are rare and prices are increasing, the MOLOTOW™ painting tools, with exchangeable tips and refill function, are not only a cheap solution, but they also guarantee sustainability.