RAINPAL RBD020 Rain Barrel or Bucket Brass Drain Port Kit Contain less than 0.25% lead, lead free compliant. For more info about lead free compliant, please visit epa.gov. Brass 3/4" Male Garden Hose Bulkhead Fitting and Brass Garden Hose Cap Need 27mm diameter or 1-1/16 to 1-1/8 inch hole to install Fit up to 9 mm or 1/3 inch wall, Inside is 1/2" female pipe threaded throughout