I tried several types of pins and found the 22-gage wire works well. I get the wire from capacitor leads. Some capacitors have steel leads, these make excellent pins. (The leads can be picked up with a magnet.) You can still use the capacitor after you trim the leads. I wrote up how to do this for a ROM replacement for the SWTPC 6800. Look in the Users Guide for the step by step process. http://www.swtpc.com/mholley/ROM_Emulator/ROM_Index.htm J.C. Wren's find of the DigiKey ED2064-ND looks good. Michael Holley