... couplers 1. British, Germany, Italian, Australian, Japanese style.... 2. forged or pressed 3.48.3mm 1. Material: Q2352. Size: 48.3mm ... /48.3mm diameter3. Surface: electro galvanized or hot dip galvanized.4. British type drop forged double coupler ... AS1576 standard couplers, Germany, American, Brazilian style couplers.....etc Forged or Pressed British Q235 Swivel Coupler