Ring similar to a bicycle chain, the ring has no moving parts.

These rings may differ in small details from the ring in the picture. There may be a slight difference in the sizes between ring to ring and from the size guide measurements.

Size guide inner diameter ring
#15 = 23.9mm
#14 = 23.2mm
#13 = 22, 3mm
#12 = 21.3mm
#11 = 20.6mm
#10 = 19.7mm
#9 = 18.9mm