Adding Casters to your Free-Standing Rack to make it roll or perhaps just looking for a little additional stability on your frame?  This Adjustable Crossbar is exactly what's needed!  

• Quickly adjusts in length from 4.8' to 6.5' (58" x 78")
• Crossbar easily attaches to each tower
• Required to use with Casters (sold separately) to easily move racks loaded with kayaks or canoes
• Offers extra stability for a larger kayak or canoes
• Suitable for indoor and outdoor use
• Limited lifetime warranty