Bibbulmun Glass Marker – 1–2mm Tip – Assorted Colours (Box of 4) Add a splash of color to your writing and drawing on glass and non-porous surfaces with the Bibbulmun Glass Markers. With vibrant, eye-catching colors and a fine 1–2mm bullet tip, these markers are perfect for everything from classroom activities and home organization to business presentations and creative artwork. The water-based ink delivers smooth, streak-free lines that are easy to wipe off with a damp cloth, making them ideal for glass boards, mirrors, windows, and more.