I have a Borg 114mm dia tube factory baffled for 5" f/6.4 objective and fully flocked with felt lining. Accepts std Borg components including Borg focusers. The tube has been drilled at focuser end to accept AP 2.7" focuser, hense the huge price break, but the holes are holes are clean and can easily be filled OR, install a 2.7" AP focuser where they will be a perfect match. Nice upgrade to 5" Borg APO. Anyway, at $100 obo, this is a major price break so I believe it's a good deal. Still, I need to sell this so no reasonable offer will be refused : ) Many thanks!