I modified Kuro's excellent MK7 based geared Bowden to use an M5 or M6 BSPT pushfit connector. The hex nut retainer channel is gone, replaced with a bolstered hole for the pushfit.BOM is the same as Kuro's, but replacing the 5/16" nut with the BSPT fitting. I've also added a couple of specialty things you might not have on hand: Follow Kuro's instructions outside of the tube attachment. To mount the pushfit, use an appropriate wrench to slowly self-tap with the pushfit connector.