This is an Supply Giant black coated steel pipe with a Schedule 40 pipe wall thickness. It has a pre-cut length of 18" long and has a nominal pipe size diameter of 1-1/4". the dimensions and properties of the Part meet all applicable ansi and ASTM standards. ⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.