2.25" Spool hub for 3D Solutech & similar spools

I printed out http://www.thingiverse.com/thing:343197 and needed a larger hub piece for my 3D Solutech spool. I've already printed this hub albeit with a smaller hole (pictured in blue)-- the ID for this Thing is .34375 (11/32") because the one I printed was a very tight fit around the 5/16" dowel (which I had already sanded).

Please check out http://www.thingiverse.com/thing:343197 for the rest of the pegboard spool holder.