It is very likely that work on these intricate patterns led to more and more complication of patterns and to the development of a "monstrous style," that is, the most complex interweaving and bends of strips and rods. This technique of decorating the plane and simultaneously strengthening it with superimposed twists of iron stripes was preserved for a very long time; in particular, shackled caskets of this type were made back in the 18th and first half of the 19th centuries in Tula.