They are available in 4 different models in order to cover the full range of die holder diameters, from 38 mm to 100 mm. They can be supplied with water cooling either direct or indirect. The former offers major advantages for wire drawing because of the good lubricant covering which ensures higher speeds and longer working life of holders. Cometo has also made a system with pressurized holders and rapid changing of them which results in an overall improved performance.