GOLD PLATED BINDING POSTThe BP-3 has a brass base metal, nickel sub plate, hard gold finish, insulated (red/black) top and the nuts are not removeable.
The #BP-3 is a gold plated replacement style binding post. It mounts in standard 3/4 mounts and has a full, 1/4 front shaft with a large cross drill hole. The rear shaft is an 8/32"
The different between BP-2 and BP-3 is the Shaft size.
BP-2 Shaft size is 0.127 in. 3.23mm
BP-3 Shaft size is 0.186 in. 4.73mm
Priced per set.