Horizontal Prism Bars
from Good-Lite (Formerly Richmond Products, Inc.) for Horizontal Prism Bars
Loose Prisms from Good-Lite (Formerly Richmond Products, Inc.)
Press-on Prisms from Good-Lite (Formerly Richmond Products, Inc.)
Prisms on a stick from Good-Lite (Formerly Richmond Products, Inc.)
Set of Vertical and Horizontal Prism Bar from Good-Lite (Formerly Richmond Products, Inc.)