Heavy duty motorized roller blinds mechanism 38mm 50mm middle joint/middle bracket big size window splited up to many small - AliExpress
Orbital Gearing vs Spring Assist - Buroshade
What drives the cost of a Roller Blind? How to reduce cost without compromising quality and performance? - Buroshade
Set Bar Roller Blinds, Roller Shades with top track, Window Roller Shades
Amazon.com: AUDEEKON Roller Blind Mount Window Shade Brackets+ Side Cover+End Plug+ Chain Mechanism for Zebra Blinds with 1.5”Tube,White : Home & Kitchen
Amazon.com: 1set Heavy Duty Roller Blind Curtains Mechanism for 38mm Tubes, Roller Clutch Curtain Accessories/Roller Blind Accessory (Size : 1.5m Bead Chain) : Home & Kitchen
Coulisse Roller blind mechanism M - white (RC3001-W) | eBay
Coulisse Roller blind mechanism M - grey (RC3001-GR) – Mega Mar USA
Coulisse Roller blind mechanism M - anthracite (RC3001-AN) – Mega Mar USA
Manual Outdoor Roller Blind System - Alpha Universal, home of Quality Fasteners & Accessories