The Krinner Christmas Tree Genie Large comes with the inventor’s original single cable operation. It also includes 5 stabilizer feet for additional security. Just place your tree in the opened stand, hold it straight and pump the foot pedal until the claws firmly hold the trunk. Your tree will be straight and ready in just seconds. Max Tree Height - 8 feet. Max Trunk Diameter - 7 inches. Water Reservoir - 1 gallon.