Note: designed to take a M5 heatset insert (4mm length, 7mm OD, got mine from here: https://www.aliexpress.us/item/3256804349544912.html)

i couldn't find a replacement 5th Element inline skate brake anywhere, so i made this replacement  that accepts common k2 brakes
tested with PLA and PETG at 20% infill, and works for me, (even slamming my skate into the ground (it's pretty beefy)), still maybe more infill/perimeters would be wise.

if you want it to look pretty, print with the very back of the heel on the buildplate, with supports “only on buidplate”

for this brake: https://k2skates.com/en-us/p/skate-brake-single