The Peace Chaplet contains 21 beads, 
arranged in seven groups of three beads, 
and pendant (which may be a bead, medal, or crucifix).

The 'Peace Chaplet', composed of
The Apostles Creed,
and 7 times the Pater Noster, Ave Maria, and Gloria
is the 'Worker's Rosary' that the Blessed Mother will never refuse to hear
if prayed from the heart.
Seven is the number of perfection in the Bible which makes the 
Peace Chaplet a perfect shorter prayer.

Beginning on the pendant, pray
The Apostles’ Creed
For each group of three beads, pray
Our Father
Hail Mary, and
Gloria