Universal Clutch Plug(Dia 28mm) of Exterior Sun Shades,Indoor/Outdoor Roller up Blinds(Crank Operated/Cordless System),Beige - Walmart.com
Amazon.com: Replacement Shade Parts Bungee Tie Down Kit for Exterior Roller Sun Shade / Blinds,Outdoor / Indoor Roller Up Blinds and Canopy / Pergola Covers (Black,Set of 2) : Home & Kitchen
Roller Shade Parts
Spring Roller Shade Parts & Hardware | US Markerboard
3 ft Wide Roller Shade Kit - 1" Tube – Fix My Blinds