This knob is made from solid pressed glass with a flat octagonal face, mounted on a brass base with a nickel-plated, oil-rubbed bronze or polished brass finish.
Available in clear or a transparent light green hue. Knob is 35mm across and 26mm high with a 22mm diameter base. The threaded mounting stem seats in a through-hole; 13mm (1/2") minimum panel thickness.
Mounting bolt included.