Tibetan Yak Bone Wrist Mala for Meditation This listing is for a Yak bone Wrist mala. Hand strung in Nepal. This wrist mala contains total of 22 bone beads. Malas are usually used for meditation, counting mantras, and prostration and those counters are especially for counting when you do prostration or in a retreat for counting mantras. Each bead measures 6mm approximately.