The Catechism of the Catholic Church defines the sacraments as "efficacious signs of grace, instituted by Christ and entrusted to the Church , by which divine life is dispensed to us. The visible rites by which the sacraments are celebrated signify and make present the graces proper to each sacrament.
They bear fruit in those who receive them with the required dispositions”. (1131)
The Catechism of the Catholic Church also states that Christ instituted the sacraments of the new law. There are seven: Baptism, Penance (or Reconciliation), Eucharist (or Holy Communion), Confirmation, Anointing of the Sick, Holy Orders and Matrimony.