This is just a slightly modified bed corner piece for mounting a 12" x 12" x 3/16" Aluminum bed plate with your choice of coating (PEI, Buildtak, Bare, Etc.) to your TAZ. It should fit most if not all of the cirrent ones out there. Requires 2 3mm heat set inserts per corner, sourced from Mcmaster Carr http://www.mcmaster.com/#94180a333/=zkm85f and the stock corner hardware and bed retention fingers. The Aluminum bed spreads heat much more evenly across its surface. Please note that the edges of the bed also get fairly warm, so use care when extracting parts. The side swill be hotter than with a glass bed by quite a bit.