Reduced double nipple, with hexagon ⅜" x ¼"

Reduced double nipple, with hexagon ½" x ¼"

Reduced double nipple, with hexagon ½" x ⅜"

STEDO reducing nipples, male thread ¾" x ⅜"

Reduced double nipple, with hexagon ¾" x ½"

Reduced double nipple, with hexagon 1” x ¾"

Reduced double nipple, with hexagon 1¼" x 1”

Reduced double nipple, with hexagon 1½" x 1¼"

Reduced double nipple, with hexagon 2” x 1½"