3 color anti-tarnish rubber
Triple fixed with a single glance mark and a rubber stopper that can be used with 1 or 3 depending on how you use it.
Small: Diameter 0.1 x 0.4 inches (3.5 x 10 mm).
Medium: Diameter 0.2 x 0.5 inches (4 x 12 mm).
Large: Diameter 0.18 x 0.5 inches (4.5 x 13.5 mm).