Description: 【Versatile Compatibility】: The Two Hole Alignment Pin is designed to fit flanges ranging from 1/2" pipe to 12" for class 150 flanges, and from 1/2" to 8" for class 300 flanges, making it suitable for a wide range of applications including up to 2-inch thick flanges 【Material】: Made from aluminum, this Flange Two Hole Pins Set offers durability and longevity, providing reliable performance over time 【User Friendly Design】: With its lightweight construction and straightforward design, this Two Hole Flange Alignment Pin Set allows for quick and efficient use in aligning double hole flanges accurately every time 【Features】: The Two Hole Pins Set ensure accurate alignment with pipe flanges. The threading has passed go/no-go gauge checks, guaranteeing a good fit and easy installation 【Complete Set】: The package includes a pair of large pins and a pair of small pins, along with a built in level for accurate alignment tasks Specification: S: 2.99cmx2.84cm/1.18inchx1.12inch L: 4.29cmx4.08cm/1.69inchx1.61inch Package Includes: 2 Pair of Flange Alignment Pins( 1 Pair of Small Flange aligners and 1 Pair of Large Flange aligners) Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.