Luanxu 4.5 mm Stainless Steel Roller Blind Chain with 5 Connectors, Fix or Replace for Broken Roller Blind Curtain Chain, Great Pulling Force & Rustproof (#10, 3 Meters) : Amazon.com.au: Home
Roller Blind Mechanism with a Plastic Chain | Dunelm
2 Roller blind beaded chain connector link spare part