Mahadev Locket  means “three-headed spear” i.e. “trident” in Sanskrit. In a general sense, the Trishula represents the Hindu God Shiva in his three aspects of Creator, Preserver, and Destroyer. It also represent the three shaktis (powers): will, action, and wisdom, and the three main nadis (energy channels) ida, pingala, and shushumna, which allow kundalini energy to travel through the chakras.
*** RUDRAKSHA in Sanskrit meens “eye of Shiva” or “tears of Shiva”. Rudra is one of the names of the Indian Lord Shiva.