Description The GT / Cepek CTIS Hardware and Kits for the Hummer H1 consists of Stainless Steel Braided CTIS Lines designed specifically to fit GT / Cepek Wheels, and Factory Steel or Aluminum Wheels and incorporates a unique quick disconnect dual isolating system on each hub fitting allowing the operator to simply disconnect and fully isolate the wheel in seconds. No more disconnecting one side and quickly running to the other side of your H1 to isolate the wheels. Note:  May require modification to OEM aluminum wheel center cover.