The original version of this didnt work with the pc4 m10 pushlock fittings I got off of amazon( https://www.amazon.com/gp/product/B07S1GLM8R/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 ). The bore inside of the fitting was too small to fit over the printed part and it would only screw in a few threads then strip them because it bottomed out. I narrowed the tube inside the part and it threads in all the way now.