Declension table of ?vajrakavaca

Neuter	Singular	Dual	Plural
Nominative	vajrakavacam	vajrakavace	vajrakavacāni
Vocative	vajrakavaca	vajrakavace	vajrakavacāni
Accusative	vajrakavacam	vajrakavace	vajrakavacāni
Instrumental	vajrakavacena	vajrakavacābhyām	vajrakavacaiḥ
Dative	vajrakavacāya	vajrakavacābhyām	vajrakavacebhyaḥ
Ablative	vajrakavacāt	vajrakavacābhyām	vajrakavacebhyaḥ
Genitive	vajrakavacasya	vajrakavacayoḥ	vajrakavacānām
Locative	vajrakavace	vajrakavacayoḥ	vajrakavaceṣu

Compound vajrakavaca -

Adverb -vajrakavacam -vajrakavacāt