Mount your Defender roof rack with these Smittybilt Adjust-A-Mount brackets! These brackets are designed for use on vehicles without rain gutters or for mounting on any other flat surface. Their pivoting base plate brackets attach to the roof using rubber expansion brackets. The upper bracket then attaches to the base plate and your Defender roof rack. Using Smittybilt Adjust-A-Mount brackets requires drilling your vehicle's roof and should be considered a permanent installation.