This pretty penholder from Manuscript can be effortlessly changed from oblique to straight and back again. Each flange is made from durable brass and the staff is a glossy mint plastic.
Compatible with standard pointed nibs, or standard broad nibs when the flange is removed. For best results, remove the flange, insert your nib, then insert both back into the holder.
These penholders come pre-installed with a right-handed flange, but can easily be made lefty-friendly by adding a left-handed flange instead. Find left-handed flanges here and right-handed flanges here.