If your chain allows you can fit one to stop the blind going up too far and another one to stop the blind coming down too far. The drop of the blind and blind chain may prevent you being able to have two stop lock balls on roller chain.
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Wooden Blinds 100% Basswood Venetian Blinds Adjustable Slats Light Filtering Privacy Protection Custom Size Window Blinds for Ho
Aliexpress UK
COMPLETE 40MM ROLLER BLIND FITTING KIT. WITHOUT CHAIN.
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100% Blackout Blind 1.5/2/3/4M Stick on Blackout Blinds for Window No Drill Portable Temporary Blackout Blind for Bedroom Travel
Aliexpress UK
YOU CAN USE A SHORTER CHAIN AS IT WILL CONTINUOUSLY PASS THROUGH THE WINDER AND PULL THE BLIND UP OR DOWN. IF YOU CHOOSE THE 100CM DROP (THE ACTUAL LENGTH OF THE CHAIN IS 200 CM = TWICE THE LENGTH OF THE DROP ).
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Blind for Window Self Adhesive Pleated Blinds Cordless No Drill Fabric Blinds Room Darkening Shades Blackout Shades for Bathroom
Aliexpress UK
Tuya Smart Blind Motor USB WiFi Automatic Electric Roller Shutter is a compact smart device designed to automate the opening and closing of roller blinds, shades, or curtains. The motor easily attaches to existing roller blinds and enables smooth lifting and lowering with a single tap on your smartphone.
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Custom Honeycomb Blinds Adjustable Shades Cellular Blinds Heat Insulation Blackout Privacy Protection Cellular Window Blinds
Aliexpress UK
✅Universal fit – suitable for most roller & Roman blinds. Colour: White. Easy DIY Fix—Extend the life of your blinds affordably.
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Custom Cellular Blinds Shades Honeycomb Blinds Heat Insulation Blackout Privacy Protection Adjustable Cellular Window Blinds
Aliexpress UK
⚙️ Universal Fit: Suitable for roller blinds, Roman blinds, and vertical blind chains. Keep your blinds working smoothly with these high-quality plastic pull cord connectors. 🎨 Neutral Design: Classic white color blends seamlessly with any blind or curtain style.
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Blinds Window Cleaning Brush, Detachable Washable Blinds Dust Removal Brush, Blinds Duster, Household Dust Brush For Window Blin
Aliexpress UK
Due to light and screen difference, the item's color may be slightly different from the pictures.
eBay
Blinds Window Cleaning Brush, Detachable Washable Blinds Dust Removal Brush, Blinds Duster, Household Dust Brush For Window Blin
Aliexpress UK
Silent Gliss Cord Chain Tidy Guide. White PVC Cord Retainer. Curtain Accessories. Cord Pulls. Get In Touch. Blind Parts. Get In Touch! Based In United Kingdom.
eBay
Blinds Window Cleaning Brush, Detachable Washable Blinds Dust Removal Brush, Blinds Duster, Household Dust Brush For Window Blin
Aliexpress UK