There is a version of their nock that is called the T4. It is just the nock without the plastic vanes so you get the twist off the string but you can use regular vanes. I shot them for a while with Blazers and Quick Spin Hunters. I had good luck with them and had good arrow flight with broadheads. Only complaint I had with them is that they did not fit my CX Maxima Hunters very snug so they were constantly twisting and I had to line them up shot after shot.