The Montana EMPTY BALLTIP markers are the work horse of the empty marker family. Available in 2mm and 6mm, these empty markers distribute their potential 30ml of content through an industrially strong ball tip that can tolerate just about any type of surface. EMPTY BALLTIP markers are the highest quality german manufacture with flexible plastic bodies that enable just about any ink or paint to be squeezed past the ball tip. Delivered as empty markers.