Whiteboard Marker 157RI with ESK15W Refillable Ink The 157RI Whiteboard Marker is designed for smooth, consistent writing on whiteboards. It features a durable tip that allows for precise lines, making it ideal for both detailed work and bold lettering. The marker is equipped with ESK15W Refillable Ink, which ensures longevity and reduces waste. This refillable ink system not only provides vibrant colors but also allows users to easily replenish the marker, promoting sustainability. The ergonomic design ensures comfort during extended use, making it a perfect choice for classrooms, offices, and presentations.