We use these at the Food Bank to mark out bar codes on donated food items. They last well even when used on damp labels. The price can't be beat esp for the quality.
First time using TRU RED tank permanent markers chisel tip black what caught my attention was the low affordable price tag of the chisel tip. It's very important to me that the marker sits comfortably in my hand when drawing also that tips hold their shapes and that the dark black ink dry time is quick to ovoid any smudges. I did go through several markers in one long sitting however other than that I do recommend.