The HW-UW-20 is a standard regular Pencil Wire wrap Tool accepts 20AWG wire gauge. This is a two sided wire wrapping and unwrapping tool intended to be two tools in one. It is designed to produce perfect wire wrapping connections. Precision, long-lasting tool is suitable for use where occasional wire wrap is required or where power wire-wrapping tool is not practical. To switch from wire wrapping to unwrapping takes only seconds by just a quick change of the cap from one end to the other.