1/8? thick solid aluminum. Includes extended length aluminum hard top and cab extension to lengthen your cab sixteen inches. Includes a new C-Pillar and new D-Pillar. Can be mounted in multiple ways - Rivet on, screw on, TIG weld. No cutting required to install. This roof is a single piece of aluminum - seamless (unlike other hard tops which come in two parts and are prone to leakage.) This listing INCLUDES special forces grab rails. INCLUDES: C-Pillar Angle top trim, LH/ RH (2) Extended Cab 1/8" angle top overhang plate (2) C-Pillar for angle top roof (1) Extended cab 1/8" angle top splice plate (1) Extended cab 1/8" angle top roof plate extension, MEGA CAB (1) Windshield bezel angle top trim, LH/ RH (2) Windshield center bezel angle top (1) 4-Door 1/8" angle top roof (1) Hardware kit (1) D-Pillar for angle top roof (1) Extended cab side wall extension skin, MEGA CAB (2) Extended cab side wall extension overlay, MEGA CAB (2) Tactical grab rail 4-door assembly (2) Notes: Not for use with civilian Humvees. ***All truck freight orders ship when trucking is available. There are no guaranteed ship dates or delivery dates. Any verbal guesstimates are simply guesstimates and no guarantees. Cancellations of any truck freight order incur a 20% restocking fee + return shipping at the expense of the purchaser. Cancellation refunds can take up to 30 days. ***SHIPPING NOTE: East of the Mississippi River, the shipping is as stated in the listing and the product is delivered to the buyers nearest available Fastenal Store, where the buyer picks up the item. West of the Mississippi there will be added shipping based on market rates ***IMPORTANT LEAD TIME NOTICE: This item is hand made to order in our fabrication shop. Please allow 2 weeks for production PLUS additional time for BOL Freight shipping and handling. If you are purchasing from outside of the United States, please be aware that your country will charge you import duties, as well as VAT (value added tax), for European Union members. Those taxes will be collected at the time of delivery. You, the buyer, are responsible to pay any applicable fees, duties, and/or taxes for your purchased item(s). HUMVEE, HMMWV, the HUMVEE Vehicle Configuration, and AM GENERAL are registered trademarks of AM General LLC. Federal Military Parts and its products and services are neither affiliated with, nor endorsed by, AM General LLC.