Load carrier for assembly on rails. Smartly designed load carrier foot with built-in, concealed attachment mechanism, which, in addition, has an anti-theft function. There are no loose parts, which allows for practical, simple assembly. The foot is clamped onto the rail with the aid of the accompanying torque wrench. The torque wrench is inserted into the end of the pipe for tightening to the specified torque. An impact-resistant black plastic sheath surrounds the foot and a rubber-covered grip around the rail prevents chafe marks.