Main wire = 4 x circumference of bracelets (if you want to get thicker you can use 6 times) - Coil spring ... gauge ( wire diameter 0.6mm ) : 250cm( 100 inch) You can flatten it with whatever tool ...

In the video I use : 22 gauge ( wire diameter 0.6mm ) : 30cm ... True Cuckoo Timestamp 00:00 Preview, Material and tool 00:32 Twisting the springs to create petals 03:58 Weaving wire to fix ...