Careful assembly! Assembly Tool D30/D5.2-30 is a practical aid for building conveyor lines with item Conveyor Rollers TR30. The robust aluminium bushing is used to press Bearing Flange D27/D5 (0.0.673.67) carefully and evenly into Tube D30. The Assembly Tool covers over the axle of the Bearing Flange so that a hammer can be used to install it in a Tube D30x1.8 KU (0.0.675.01) made of plastic or a Tube D30 (0.0.628.52) made of aluminium. The set contains two aluminium bushings to protect the axles on both sides.