Pair of CONTACT POI featuring 80mm STAGE BALL weight 150 gr. CONTACT POI represents the latest innovation in poi swinging, being perfect for isolations, throws and body rolling. The SILICONE knob used on our PRO version has a fantastic grip and due to its dimensions (diameter 40 mm) is the perfect counterweight on throws. The string is 6mm diameter and 50 cm long. To adjust the lenght of the string just pull it out off the knob, tie a simple knot and cut the excess.