IMM zipper brushes included in ZBrush are made of cubes, I needed a coil zipper for my project. I hope you find it handy :)
Made in ZB 4r8, it also works in ZB2018
Link: https://drive.google.com/open?id=1WE_E4C-K05cXLODVV6MiIQH5clr58hex
Readme included
Checked in Norton Antivirus