Petzl equipment checking

When should I retire my equipment?

A product must be retired when:

• It is over 10 years old and made of plastic or textiles
• It has been subjected to a major fall or load
• It fails to pass inspection
• Its reliability is in question
• Its entire history is not known (e.g. found or second-hand product)
• When it becomes obsolete due to changes in legislation, standards, technique or incompatibility with other equipment, etc.

Source: https://www.petzl.com/INT/en/Sport/FAQ/when-should-i-retire-my-equipment