1. Trailer coupling 2. AS 4177.3 3. 2000kg to 3500kg 4. painting, zinc-coating, galvanising 5. 1-7/8", 50mm, 2" 1. Trailer coupling2. As 4177.33. painting, zinc-coating, galvanising4. 2000 kg to 3500kg5. 1-7/8", 50mm, 2" ----6. 2 holes, 3 holes, 4 holes, weldable, offroad trailer coupling