According to the Catechism of the Catholic Church, 'The sacraments are efficacious (effective) signs of grace, instituted by Christ and entrusted to the Church, by which divine life is dispensed to us' (#1131).
Saraments are moments of grace inwhich God freely gives unmerited favor and love to us, instituted by Jesus and entrusted to the Church, for the good of the person and of the Church. God comes in a special way to each recipient to save them and to make them holy.
The Church celebrates seven sacraments; Baptism, Eucharist, Reconciliation, Confirmation, Matrimony, Anointing of the Sick, and Holy Orders.