- Rubber pads on bottom of the T-bolt clamps to prevent damaging car paint - Come with three different sizes of clamps for universal fitment - Easy to assemble & remove in minutes - Hook on car window frames, with skidproof rubber strap - no drilling/cutting required - Full Set of Cross Car Roof Rack System has: 2x Roof Rack Cross Bars, 3 Pair of Mounting Clamps, Necessary Mounting Hardware Included