Gear drive professional printing presses 500 x 700mm the difference between these printing presses and our lower cost p690 presses so you can expect a cast aluminium frame fitted with 80mm diameter steel pressure rollers which give a press force of 1000kg the 271 ratio gearbox makes the handle turn more easily the distance between the top roller and the plate bed can be adjusted to maximum of 18mm allowing thicker etching plateswood blocks to be used with this press requests for a 43mm c