For scaffolding accessories Korean Pressed Swivel Coupler, hunanworld would give you basic information as the purchasing guideline. You can see if is it your requirement before your purchase. Korean Pressed Swivel Coupler description: First of all, products parameter information: Dimensions: 48.3-48.3mm Material: Q235 carbon steel Nut: 21mm,22mm,23mm T-bolt: 80mm,89mm Weight: 0.95-1.05kg or as per your request Color: Self-color(Black) , White, Yellow Then, products standards and technology information: Standard: EN74,BS1139,CE and also fit for our domestic standard, through SGS test. Techs: Drop Forged Surface treatment: Self-color,Zinc plated ,Hot dip galvanized Style: British(also can produce German, American, Japanese and so on) With more information, please send us email for details.