Monstrances 

Monstrance is a liturgical vessel used in the Catholic liturgy to place a consecrated host in order to be displayed on the altar during services, adoration, blessing with the Blessed Sacrament and during the procession. At the beginning of adoration, the priest takes the custody of the host from the tabernacle and places it with a special handle called melchizedek in the monstrance. When the adoration is over, the celebrant (priest or deacon) blesses the faithful and after completing the adoration he performs the same activities by keeping the Blessed Sacrament in the tabernacle.