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About us Ningbo Topsky Industry and Trade Co., Ltd is located in Ningbo, Zhejiang Province. We are both manufacturer and trading company. We specialize in Ratchet straps, tie downs and also trailer & towing products (Hitch Ball, Ball Mount, Pin & Clip, Trailer Coupler) for 12 years. Our products is with high quality and at a favorable price. We′re pleased to get your Inquiry and will reply you as soon as possible. Our principle is " Quality first, service first, continuous improvement and innovation to meet the customers". For the management, we follow the request of " Zero defect, Zero complaints" as the quality objective. Our Own factory: Yuhuan Liyun Machinery Co., LtdSpecialize in the hardwares for 12 years, started at year 2006.We have passed Walmart factory audit. Product description 1. This multi-use ball mount designed enable for fast and easy switch between ball sizes without needing to install or own an entirely different ball mount. As well no need to remove a hitch ball and Reload a new one. 2. Each ball capacities - 1-7/8" ball are rated up to 2,000/200 lbs / 2" ball are rated up 6,000/600 lbs and 2-5/16" ball are rated up to 10,000/1,000 lbs. Hook capacities: 10,000lbs. 3.High Compatibility: Suit 2" x 2" receiver hitch opening and Fits 1 7/8", 2" or 2 5/16" Couplers 4. Rust And Corrosion Resistance: With durable surface treatment process, finished with a black powder coating,the ball is perfect for long time use. These surfaces are resistant to damage from rain, dust, snow, road salt and other corrosive threats. 5. Good Value And Quality: Made of heavy-duty solid steel, durable, robotically welded, with higher strength, Hitch balls and hook are permanently attached, Hollow shank is sturdy yet lightweight.Package include hitch pin.