trailer hitch coupler Trailer Coupler Coupler for 1-7/8" ball X 2" channel Raw Material: Q235, We also can customize according to Customer's requirments. Processing Flow: Blanking → Stamping → Forming → Marking → Grinding (Sandblasting) → Zinc plated (HDG. Black E-coating) → Assembly → Packaging (Can be customized) Machining: 1. CNC Metal Plate Hydraulic Guillotine Shearing Machine; 2. Punching press machine (High power precision stamping machine); 3. Multi-station Cold pier machine for making PIN; 4. Stamping and marking machine (Laser marking machine); 5. Vibratory polishing machine; 6. Riveting Machine; Specs: Tralier Coupler excludes the HITCH BALL. Coupler is suitable for 1-7/8" ball and 2" Channel. Product Picture: Diagram & Installation: Production: Application: