“This is the first product (of many) from The PiHut that I have not been happy with. I'm using these jumpers with a quality BusBoard breadboard, and they just do not go into the holes easily. I have to force them, and it feels like it is damaging the contacts to do so. I had no problems with the jumpers that came free with my Elegoo Arduino kit, or with jumpers from Rapid Electronics (https://www.rapidonline.com/Rapid-JW-003-Breadboard-Jumper-Wires-Bundle-Of-75-34-0673), so I assume it must be due to the shape of the pins. I have had no option but to put these in a box with a label to only use in emergencies. It would be great if you could source some different jumpers.”