Jeil Mtech (Markmans) Scribing head, SI-230, is Ball Screw Head which is able to scribing marking (Through SI-03 pin). This Marking head is suitable for the marking which need noiseless marking. Possible to mark for precise marking like 1mm character marking. SI-230 is easier to install to customer application.(Chassis marking) The Ball Screw made by iron and X, Y-axis has a LM Guide inside of the marking head for smooth and long lifetime of moving.