Expo Dry-Erase Board Marker Black - Dry-erase Broad-tip Markers Available in vivid colors that wipe off easily with a tissue, an eraser, or even with your finger. Use on EXPO surfaces, porcelain or melamine boards, glass, unpainted metal or glazed ceramics. Ideal for large numbers and letters. Set of 4 contains Black, Red, Blue and Green. Set of 8 contains Black, Red, Blue, Green, Yellow, Orange, Purple and Brown. EXPO Eraser Help keep your white board looking like new by using this specifically designed eraser.