XINGYHENG 2080Pcs 2.5mm Pitch 2/3/ 4/5/ 6/7/ 8/9 Pin Male Female Plug Housing and Male Female Pin Header Crimp Terminal Connector Kit (8 Size, 160 Set, Each 20 Set) Compatible with JST SM

The crimp inserts slip out and don't lock in to the plastic housing well.

Is a complete set and works well

From the pictures, these looked like the right connectors, but the pictures are so low-contrast I was mistaken. Be very careful that these are the connectors you need!