These scales are made with high quality epoxy resin and jute fabric.
Jute is similar to burlap, but is a softer natural fiber with better resin-binding properties, resulting in better cohesion between the resin and the filler.
The photos above are representative of the scales you will receive.
 
 
Approximately 5 x 1.6 x 0.33 inch per scale.
 
Approximately 5 x 10.5 inch per plate.