You know I would NEVER use the comb part of the rat tail comb to detangle nappy hair on the first pass. I have seen people use them on nappy hair once it's already been completely detangled. I've never tried it on my girls. I do , however, frequently use the tail end to make my parts. Up until now I've been using the comb on the left--which is completely made of plastic. It makes satisfactory parts. It's also good for prying apart moderately small to big braids. I'm always looking for a hair pin or some other sharp item to remove knots and tiny braids. No more! The metal tail is the TRUTH! Not only does it do a better job on unraveling the braid/twist stitch, it's excellent on those knots. It also makes great parts. My only concern is my tendency to absent mindedly rake the tail too hard across my daughters' scalp while making a part. I have to be super careful with that metal tip. I cringe at the ramifications of making a mistake. Can you im...