Functions Our hitches are equipped with 3 steel Balls include a one piece balls and a replaceable ball. Double ball sizes are 2" and 2-5/16", replaceable ball size is 1-7/8". 2" tow ball has a towing capacity of 8000 lbs, while the 2-5/16-inch tow ball has a strong towing capacity of 18,500 lbs, replaceable ball has 6000 lbs. Our accessories can precisely drop 8 inches and rise 8 inches, so that they can be adjusted flexibly while still reaching the highest traction. Our accessories can be used for vehicles of different heights and are compatible with the standard 2.5 inches receiver's vehicle, which has universal compatibility. Our products are equipped with everything you need, all made of strong corrosion-resistant stainless steel. Each adjustable trailer hitch includes two sets of locks and keys combinations for securing the ball mount platform and hitch. Not only adding safety, but also provides a part of the security anti-theft function. Equipped with a small wrench for replacing the ball. Feature The body of trailer hitch is made of aerospace grade aluminum, which is not only smooth and strong, but also has super corrosion resistance. The ball of the trailer hitch is made of hot forged steel, which has excellent strength. So the product can be withstands years of use without issue. Package Included 1x Trailer Hitch Device (As Pics Shown)