The Original: Summer follows in the footsteps of the provenly popular Original: Spring. Made out of a clear acrylic, the only colored parts of the pen are the: clip, ring, piston and nib. These components have been plated in a bright coppery orange. As always, the Original: Summer uses our in house stainless steel nibs and this demonstrator has a full view of the piston filling system.Nahvalur Original Plus Summer Fountain Pen Specifications: Pen Material: Clear Acrylic Trim: Orange Nib: Stainless steel #6 size made by Nahvalur Filling System: Piston-Filling (bottled ink fill only) Pen length, closed: 5.75 in. / 146mm Pen length, open (cap off): 5.11 in. / 130mm Pen length, open (cap posted): 6.97 in. / 177mm Pen Diameter, barrel: 0.51 in. / 13 mm Pen diameter, grip section: 0.37 in. - 0.43 in. / 9.5mm - 11mm Pen weight (without ink): 1.2 oz. / 34g