Kulannder 60 Pieces Breakaway 40 Pin 2.54mm Straight Single Row Male Pin Header Connector for Arduino Prototype Shield

These are decent quality headers, which come in handy if you are breadboarding circuits.

I installed a few of these so far as programming headers in Sonoff IoT devices. They break cleanly at the desired length with nippers, and soldered in very well.

They are fiddly, but seem to be fine. Be advised you'll need a specific crimping tool and to learn how to use it.

Arrived on time, good quality

You'll never run out.