They are Shakanyorai, Amidanyorai (Amitabha Tathagata), Ashukunyorai and Hoshonyorai (Ratnasambhava, one of the Five Wisdom Buddhas) and they are made with mokushin kanshitsu-zukuri (wood-core dry lacquer).
釈迦如来、阿弥陀如来、阿閦如来、宝生如来の4体で木心乾漆造である。