For a safe anchorage, 5-7 times of the water depth in length of chain should be put out.
This markers can be printed in different colors to mark the anchoring chain at different length. The length of the chain can be determined by the colored markers.
Two parts need to be clipped together in a chain link as shown in the image.
Suitable for a 13mm chain according to the dimension of standard DIN 776
print in low speed 10mm/s in different colors.