Roller chain for professional fitness equipment, supplied in rolls of 5m length

Roller chain for professional equipment, supplied in rolls of 5m length.
Used on different Technogym series (BIO line, executive line, strength, silver). A must: always keep in the van for gym service engineers.
The supplied chain has a breaking load of N 16400 - about 1672 kg to guarantee maximum safety in use.
See the attached diagram for the measurements.