The Black/Clear Perfect-Pour is made of plastic. It uses a ball bearing system to allow for the look of free pouring with the control of measured pouring. Simply move the bottle through a 45° angle and the liquid will start to dispense and will cut off at the required capacity. This collared pourer has the added benefit of identification markings on the collar, ideal for untrained bar staff to avoid over-pouring and spillage. Sold in packs of 12.