Using these pogo pins is easy. For programming or testing jigs, just place the pins where you need them. If you're JTAG programming a board without solderable headers, insert the thin contacts into a 0.1' pitch IDC programming cable and press it onto the contacts. When using, be careful not to bend the pins too much as it may affect their performance. For maintenance, keep them clean and dry. If they get dirty, you can gently wipe them with a soft cloth. Store them in a dry place to prevent rusting.