Utilize an OLO Connector Ring to create unique double-ended markers that feature choice of colors and nibs. The OLO Brush Handle utilizes the OLO Connector Ring to bring you a natural brush-like look and feel to your marker. The tapered extension of the OLO Handle provides a unique painter-like coloring experience for marker users. OLO handles work with any OLO half-marker by utilizing OLO Connector Rings. High-Quality Replacement Brush and Chisel Nibs. Made in Japan. The OLO brush nib provides a smooth, fluid feel while maintaining balance and control while the OLO chisel is designed to provide optimal control for thick and thin strokes. All OLO nibs work with all marker bodies.