Acrylic Nib Block - For those of you who do pen restoration, a nib block is an important item for your tool box. We've used a machined steel nib block for many years and once in awhile you can turn one of these up, but the steel blocks run hundreds of dollars. These new precision made acrylic nib blocks work perfectly for straightening and re-shaping nibs. Better still, the cost is affordable for everyone. Clear acrylic nib block measures 11.5 cm x 5 cm (4.5 x 2 inches), with diameters on both convex and concave surfaces running from 3 to15 mm (1/8" to 19/32"). Use a burnisher to work the kinks out of your nibs on the acrylic nib block. Nibs shown in photo not included.