This is a genuine Strandberg bridge base plate. I kept these as spares because the screw threads are prone to damage. This one for the NX series is said to have reinforced screw threads. I have confirmed that the screw threads of the items for sale are in good condition. Although it's for the NX series (rev7), it can be used on all previous generations of NX models. I am selling them in sets of 2, but I have a total of 6 of the same item. I will offer a shipping discount if you purchase them in bulk. I will ship via Yu-Packet Post. EGSB-1B-BK