I honestly haven't had need to use the TSA knife head yet, but it looks just like the knives airlines use in first class, so I'm sure it works well. As for getting thru TSA, no problems whatsoever after 4 trips thru security. Yeah!!!
TSA Knife Head
this was a good addition to my set. i was able to tuck it into the little box along with the other pieces.useful and convenient with a small footprint.