Ö-Norm Standards is an Austrian Quality Certification.
This tire chain standard is the most stringent in the world.
Only best quality snow chains in the world meet this standard.
The main advantage is durability. The best quality 10B21 alloy steel
extends the life of the chain up to 83% longer than our normal TUV diamond chains.
The complete Ö-Norm requirement, testing and conformity can be viewed at
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