Zig Kurecolor Twin Tip Marker, Deep Blue A professional quality graphic marker with both fine measures 1-mm and broad measures 6.5-mm tips The marker barrel is squared to prevent rolling off the workspace and this marker is both blendable and refillable Use it on a variety of surfaces including glass, acetates, metals, paper, photos and more Imported and conforms to ASTM D4236 standard Available in deep blue color