A handling unit (10) comprises a loop gripper module (11) and a clamping device (12), which has a frictionally engaged connection with the sliders (24-33) of the loop gripper module (11). The sliders (24-33) are lightly clamped in corresponding slots of the clamping device and cannot, even if shaken, slip against one another and in particular they also cannot slide out of the loop gripper module (11). Thus, the sliders are all at the same position, and need not be moved back by hand during mounting. For example, in order to remove clamping device, which is in the form of a plastic clip, the clamping device need only be pressed onto the loop gripper module or be pulled away from the loop gripper module. When this force is applied, the plastic clip is lifted from the sliders (24-33) in a rotating movement.