Insulated two way jumper links incorporating high pressure double sided phosphor bronze tin plated contacts. These are end to end stackable, easily fitted and removed by hand and designed to be used in conjunction with pin headers or similar types of header with 0.635 mm square or round pins on a 2.54 mm pitch. They provide an alternative on-board programming method to DIL switches and are available in a choice of three styles. Open types available in red, black and blue. Closed and pull-tab type available in red and black. RoHS compliant