Spare Parts for cheep video soft box from china

Made the part I needed but since the matching part is almost identical I'll add it at a later date so I have all spare parts should I need them.

I have a octagon soft box but I saw that the square uses this part also but not using all mounting holes. So this may be a spare part for more than just the model I have.

Update: just Caded the top spare parts. Works fine for me. Exchanged all screws for small 10mm long, 3mm diameter wooden screws.