Red Decoart Glass Marker pen 1mm nib. Quality paint markers designed for glass and glazed ceramics but can also be used on porcelain and metal. More details: Great for personalising, outling and drawing. Excellent adhesion. Durable fine tip. Vibrant colours to choose from. A glossy translucent finish. Water based and non-toxic. Quick and easy cleanup. Allow to air cure for approximately 8 hours then bake at 375°F for 40 minutes for a dishwasher-safe finish. Not for direct contact with food