ข้อต่อตรงทองแดง

1-1/8", 1-3/8", 1/4”, 1-5/8", 1/2", 2-1/8", 2-5/8", 3/4", 3/8", 3-1/8", 3-5/8", 4-1/8", 5/8", 7/8"