For clamping to vertical or horizontal rods and to laboratory tables, boards etc.. Comprised of a specially designed cast bracket which can be clamped on flat surfaceS 38mm thick and hold a supporting rod 13mm diameter. At the rear of the bracket, a light alloy pulley about 70mm diameter is mounted on brass bearings. Includes two clamping screws for fitting to bench and vertical rod support. Hammertone stove enamel finish.