Venetian blind spare parts

I had problems with my old Venetian blinds. All plastic parts were broken. So I drew these parts and repaired all my Venetian blinds. Maybe it will be usefull for someone else.

Basic informations:

• The top C-bar is 25x20mm
• The bottom C-bar is 25x6mm
• The holes in bottom C-bar have diameter 6mm

Notes:

• The hole in "Plug for strings" is need to be enlarged with 2mm drill
• On one Venetian blind I had broken coupling (see enclosed image with note Coupling). To assembly new coupling is need to warm the spring with hot air gun and then push the spring into the Coupling. Then mount the Coupling on the rod in Venetian blind (in my case the rod has diameter 4mm)
• All parts a tight to prevent before falling out