Features: The flange has great corrosion resistance ability,and can withstand high pressure. It also has good elasticity,can be used in various occasions. We drill 4 holes and there are fine carved words on the surface. We adopts British screw thread, and the technology is simple and elegant. The reverse side is flat and smooth,parallel to the contact area. Specification: Type: transverse Connection mode: screws Special function; Corrosion resistance, high pressure resistance, good elasticity. Diameter:79mm British specifications:3/4 " Metric specification: DN20 Small hole pitch: 6MM The distance between holes:34 Size:8*8*1cm/3.15*3.15*0.39in Package List: 10*Flange Note: 1. As different computers display colors differently, the color of the actual item may vary slightly from the above images. 2. Please allow 1-3mm differs due to manual measurement.