This is a new filament holder for the Weistek IdeaWerk 150 printer. I purchased some BuMat filament a while back and was aggravated to find it didn't fit the factory spool holder. This printed one has fixed the issue. I apologize if you downloaded the first version i posted. I had the hole spacing off slightly. These two new models fit perfect. I haven't printed the recessed screw design, but it's a remix of the original, so hole spacing is identical. I printed with 50% infill and 5 shells and 45mm/s, no support. It came out alright, but the first few layers of the stop on the end didn't bridge well. In the picture, the one on the left is the printed model and the other is the factory part.Pretty simple install. Use allen wrench to remove old spool holder. Set aside short screws that were in it. Install new holder with the longer screws included in the spare parts bag.