Zamp Plate w Nut Square 65 X 65 for Race Seat Harness. Square Plate w/ Nut 65mm x 65mm. Fits Seat Harness: 6-point 3"/2" Pull-Down(Out) FIA Harness (HARN03F003), 6-point 3"/2" Pull-Up(In) FIA Harness (HARN03F005), 6-point 2" Pull-Down(Out) FIA Harness (HARN04F003)