This adaptor converts a device in 8-pin SOIC package to 8-pin DIL package suitable for plugging into the Dual-in-line (DIL) IC socket on a PCB.  It has 300-mil wide 8-pin DIP with solder-tail pins for 8-lead, 153-mil wide SOIC packages. Devices in those packages include serial EEPROMs (24-series, 25-series & 93-series), Microchip's PIC microcontrollers (12C508, 12C509, 12CE518, etc.) Fits 100-mil breadboards and many microcontroller development systems.