Size: 9-pin female to female, 2 pieces D-Sub 9-pin Female to Female Coupler Adapter 【Please note!】D-Sub 15-pin is not compatible. This adapter allows you to connect and extend male-to-male cables used for serial ports such as RS-232 (cables are not included and must be purchased separately). Size: 31.4mm x 18mm x 12.7mm Weight: 6g Product Contents: Coupler Adapter x 2 Price reduction requests are not accepted.