• 三鈷さんこ

  trident vajra

• 独鈷とっこ

  single-pronged vajra, tokko, dokko, copper or iron implement, pointed at both ends, used in esoteric Buddhist rituals

• 雷鈷らいこ

  ground stone tool from the late Jomon period

• 独鈷石とっこいし

  ground stone tool from the late Jomon period (named after its similarity to the Buddhist tokko)

• 飛行の三鈷ひぎょうのさんこ

  three-pronged vajra flung by Kukai on his return from China to determine the Holy Land of Esoteric Buddhism