The Vajra (Five-Pronged Vajra) is an important ritual implement also used by Kobo Daishi Kukai. It is the most representative vajra, or ritual implement, in Esoteric Buddhism. For spiritual training, warding off evil, protection from demons, amulets, improving intellect, and academic achievement. Size: Length 10 cm Width 2.5 cm Weight 80g Used about twice after purchase, then carefully stored in a drawer. Available for immediate purchase. Thank you very much.