3 sets - 12 mm size Tibetan 3 hole Om mantra copper tone plated Guru Bead with column bead - GB037s 3 sets - 12 mm size Tibetan 3 hole Om mantra copper tone plated Guru Bead with column bead - GB037s Size : Guru bead is approx 12 mm wide. Column bead is approx 10 -11 mm height x 8 mm wide. Quantity - 3 sets of Guru beads with column bead (each set has a - 3 hole bead + 1 column bead)