Pneumatic clamping of the glass sheet during the drilling operation of Opposite drilling head.BZ0213 glass drilling machine is equipped with a glass supporting table. Major Technical Specification Drilling Hole Diameter 4-130(mm) Glass Thickness 2-20(mm) Space Between Drilled Hole Center And Vertical Post 1050(mm) Total Power 1.7(kw)/2.2(kw) Dimension 1.65x2.6(M) Weight 900(kg)