10Pcs/Lot Single Row 40Pin 2.54mm Round Female Pin Header

If the pitch is indeed 2.54 mm between the pins, the sockets are so narrow that no standard male pin fits in... so avoid using these connectors with an Arduino or an ESP32 (unless you remake all the male connectors).

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Fast delivery, well packaged, product as described, very satisfied - would gladly order again.

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Very good value for the price.

The item arrived intact with good packaging that kept everything safe. Delivery was fast, and the product matches the description.

Effective as electronic equipment, it only remains to be tried in practical use.

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The insertion part is not very precise, so it's a bit difficult to insert the leg.

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