Roll your own way - the SkyLine Towers work with our LandingPads to create a customizable, mega-versatile, super easy-to-use system that easily handles your unique personality and extensive range of gear. Product Details Secure and simple - may be the easiest-to-use rack system out there Fits all styles of Landing Pad (required) Advanced tower architecture is sleek, strong and quiet Sleek tower cover styling with matte black finish to match modern vehicle styling Works with JetStream, CoreBar and RoundBar crossbars BarBed(TM) has 12Adeg of pitch adjustment to optimize tower position and level bars on roofs with curved flush rails Super-simple installation - tool included Maximum load rating of 165lbs (75kg), depending on vehicle and bar rating Easily locks to you vehicle with our SKS system (sold separately) RoundBar SL Adapter required to use Yakima&';s classic RoundBar with StreamLine System Towers (sold separately) HD Bar SL Adapter required to use Yakima&';s HD Bar with StreamLine System Towers (sold separately) Product Specs Weight: 2.00 lbs. Dimensions: L 4.50 in x W 4.50 in x H 3.00 in