Feature:
1. Available with jack wheel for enhanced mobility
2. Heavy-duty trailer jack options for large trailers
3. Corrosion-resistant finish for longevity
4. Weld on any standard coupler; Weldable pipe with a 9/16-inch (1.4cm) hole for secure mounting; 17.75-inch (45.1cm) overall height when retracted; 10-inch (25.4cm) lift; 4-inch (10.2cm) clearance from mounting bracket to top of jack; Inner tubing has a 2-inch (5.1cm) outside diameter ; Outer tubing has a 2.25-inch (5.7cm) outside diameter.
5. Precision fitted parts for extra stability; Locks at any height from 11 inches to 21 inches (27.9cm to 53.3cm) and keeps a constant height Manually raises and lowers with the included crank handle to allow for trailer hooking and unhooking; Hand crank top wind handle on the top of the unit raises and lowers the trailer coupler; 7-inch (17.8cm) long lever with 2-inch (5.1cm) diameter smooth, ergonomic rotating turn knob allows for easy cranking