These Bic Velleda Whiteboard Markers provide premium writing and sketching performance with your drywipe whiteboard. The alcohol-based ink glides on smoothly and erases just as easily, and is low odour. The markers feature a strong acrylic tip that will not bend or retract into the barrel, even with heavy use. The fine bullet tip delivers a 1.4mm line width, perfect for small text and detailed whiteboard work.