3.5" (89mm) Vertical Blind/s Metal Bottom Chain 50 clips (spare parts repair)
Vertical blind fabrics are available in 2 standard sizes 3.5" or 5", and the chains are designed to fit these 2 sizes, so for 3.5" fabric you need the '3.5" chain', for 5" you need the '5" chain'. How much chain do I need?.