Dual Dehorner saves time. One side of the dual head dehorns newborn calves up to 10 days old. Flip to the other side to dehorn calves up to 12 weeks old. Cauterizing action reduces blood loss and helps prevent infection which can occur with mechanical dehorning. Solid brass heating element is very durable and holds dehorning temperatures for a longer period of time. Inside diameter of the heads are ¾" and 1". 110 Volts 450 Watts. 9 ft. cord with 3-pronged plug. Wt. 3 lbs.