Aluminum sheet wrapped around tagboard 3/4" x 3", 1/6" hole diameter With 9" wire (not inserted) Write with pencil, pen or pointed instrument on front or back without show-through. Debossed mark remains visible, regardless of weather, grease, pitch or dirt. Aluminum sheet wrapped around tagboard. 3/4" x 3". Hole diameter 1/6". Comes with 9" wire (not inserted). Box of 500 tags.