The PTR 04 series is composed of drilling machines machine guard developed by TECNO PIU' SRL. The series features a double shield adjustment mechanism. The models from this series are specifically designed to cater applications that include Drills, bench Drills and other similar machines. These devices deliver protection from direct frontal contact with rotating spindle. In addition, the semi octagonal shield is capable of vertical adjustments by using two different systems, such as the shield arm group and the shield support clamp.