The Lord said to me, “The loss of each soul plunges Me into mortal sadness. You always console Me when you pray for sinners. The prayer most pleasing to Me is the prayer for the conversion of sinners. Know, My daughter, that this prayer is always heard and answered” (Diary 1397.
 
This Ultimate Decade comes with a Divine Mercy, St. Faustina medal,  Divine Mercy Cross with the Holy Eucharist,  as well as St. Augustine, and St. Monica medals. This decade rosary is easy to carry, durable, and beautiful.  
 
"It pleases me to grant everything souls ask of me by saying the chaplet. When hardened sinners say it, I will fill their souls with peace, and the hour of their death will be a happy one. Write that when they say this Chaplet in the presence of the dying, I will stand between My father and the dying person, not as the Just Judge but as the Merciful Saviour" (Diary, 1541).
 
"I desire that you know more profoundly the love that burns in My Heart for souls, and you will understand this when you meditate upon My Passion. Call upon My mercy on behalf of sinners; I desire their salvation. When you say this prayer, with a contrite heart and with faith on behalf of some sinner, I will give him the grace of conversion. This is the prayer: “O Blood and Water, which gushed forth from the Heart of Jesus as a fount of Mercy for us, I trust in You.” -Diary 86/187
 
Saint Monica is the greatest Saint to ever pray for the conversion of one sinner, her son Augustine, she prayed for so long and her consolation was when Saint Ambrose said the child of so many tears could not be lost, Augustine was not only converted he became one of the greatest saints ever! Now you can pray with both of them in your hands every day for the conversion of sinners. 
 
Saint Augustine's famous quote regarding his flock is "I desire not to be saved without you" Meaning he wanted everyone under his care to come to heaven with him. Now you can add those you know and love to his flock while holding his medal which is a silent prayer to him for those for whom you are praying all day!
 
Testimonial to Saint Monica
I’ve been praying to St. Monica daily for my mom’s reversion for the last seven years or so. She was actually a nun for 10 years without final vows, but left the church later to become a Protestant minister. Thanks to St. Monica’s intercession, she informed me she just returned! -PrayMoreNovenas.com