Rich,The zero clearance inserts I have are made by LeeCraft. The insert for the blade comes with a factory cut riving knife slot. The dado insert is of course blank. They are both white. I purchased them from Woodcraft. The woodcraft part numbers are #147751 and #147752 you can check them out on the woodcraft site here http://www.woodcraft.com/Search2/Sea...20craft&page=2
It's just on the tools plus website. Just plop it in your cart and enter the doubledown code. Even without the 10% off, the tools-plus prices is WAY lower at $1700 than anywhere else.