Stainless steel rings black coated
Endless band by Oliver Schmidt:
A. 2x (2mm) round size 55
B. 3x (1,5mm) round size 56
C. 5x (1,5mm) round size 56
Ur-Sprung by Patrick Malotki 7mm wide
D. Pure Crackle size 56
Sorry about the photo quality. These are made just for presentation online during the lockdown.