Built-In Level Design: The Two hole pins have a built-in level, so you don't need to prepare a separate level, which makes it quicker and more intuitive to check if the flange is level High Quality Material: Our products are made of high-quality aluminum with anodized black oxide, which makes the it more and lasts for a long time. The thread is also precisely machined and can be perfectly aligned with the pipe flange Easy To Use: The two-hole pin set is quick and easy to use, because are ergonomically designed and individually inspected, can bring convenience to your work Perfectly Positioned: If you are working on a piping project and you need two-hole pins to align your flanges. Our two-hole pins are very suitable for ½inch - 14inch ASME 150LB flanges, Manufacturer: Littimoon