Quick Products A Frame Trailer Coupler With Trigger Latch 2" Ball 5 000 Lbs. 5000lbs.. Fits standard A-Frame trailers with a weld-on design and is intended for Class III towing purposes. Meets SAE and CSA standards. GTW: 5000 lbs. Features of Quick Products A Frame Trailer Coupler With Trigger Latch 2" Ball 5 000 Lbs. Ball Size: 2" Channel Width: A-Frame Class III: Maximum Gross Trailer Weight 5000 lbs. Meets SAE and CSA Standards Weld-on design Package Contents: Quick Products A Frame Trailer Coupler With Trigger Latch 2" Ball 5 000 Lbs. Quick Products QP-HS3026: A Frame Trailer Coupler With Trigger Latch 2" Ball 5 000 Lbs. 5000lbs.