kongoban; ritual tray for vajra implements
A specialized Buddhist ritual tray used in esoteric (Shingon and Tendai) ceremonies. It holds a vajra bell and three types of vajra pestles. The term is primarily encountered in religious or art-historical contexts.
In esoteric Buddhist rituals, a vajra bell and three kinds of vajra pestles are placed on the kongoban.
From 金剛 (kongō, 'vajra' or 'diamond') + 盤 (ban, 'tray' or 'board'). The exact historical derivation is uncertain; the term is a technical Buddhist compound.