Brand new take off from my 2018 Diverge. Its a 172.5mm arm length. Here's a review of it by Bike Rumor. https://www.bikerumor.com/2017/03/29/review-praxis-works-zayante-m30-crankset-48-32-chainrings/ . Sells new @$240.00 Buy mine for $180.00.
not a pic of actual one I have, too lazy to go get it out of the box and take a picture.