Price is reasonable, functionally ok.

The 65ST. reusable breadboard jumpers smell musty as in other reviews described neatly by adhesive (like glue). I do not think it is the cable insulation (plasticizers as was written here often). On the plugs is clearly an adhesive to see where the cable into the black cover passes (smells and looks like glue, so yellowish snot). I think without this bonding the spout moves eventually. What there so müffelt is likely therefore that glue. In this quality manufacturers Plastiktüllen be injected or shrunk after soldering or crimping to better the connector pin. In the Far East it seems to be cheaper because Kleber reinzuschmieren. Loose contacts I had as yet no. However, coming at Breadboards also with expensive jumpers. It's not a super product but the price is reasonable. Was as Amazon Plus product ordered.