Quick Products Zinc Trigger Style Trailer Coupler 1 7/8in Ball 3in Channel 2 000lb.. Intended for Class I towing purposes and meets SAE and CSA standards. GTW: 2000 lbs. Features of Quick Products Zinc Trigger Style Trailer Coupler 1 7/8in Ball 3in Channel 2 000 Lbs. Ball Size: 1-7/8" Channel Width: 3" Class I: Maximum Gross Trailer Weight 2000 lbs. Meets SAE and CSA Standards Bolt-on design fully zinc coated Package Contents: Quick Products Zinc Trigger Style Trailer Coupler 1 7/8in Ball 3in Channel 2 000 Lbs. Quick Products QP-HS3022Z: Zinc Trigger Style Trailer Coupler 1 7/8in Ball 3in Channel 2 000lb.