High Quality:Made from industrial malleable Cast Iron material, High Strength and good toughness.LIGHT WEIGHT.No for gas,air or water(needs to be cleaned and sealed to prevent rust before use).Color:Dark Gray .Good for DIY:It meets your all needs for your DIY projects.These plumbling flanges can be used to many kinds of accasions,such as wall lamp,pipe furniture, drying racks, shelving, retro lighting, and any industrial crafts dcor. .Strong Three Bolt Holes Designed:The three-hole flange will be more perfect support effect which spreads out the payload evenly.They can be easily attached to wall, floor, or other surface it will bring your house or store a Loft Retro Industrial charm. .Industrial Standard:For easy functionality and interchangeability our floor flanges have been formulated to meet national standards. .SATISFACTION GUARANTEED - We are deeply confident in the quality of our products. If there are any issues we stand by our products , just e-mail or call us and we'll make it right. .