... company produces various thread-shaped screw jack, including triangle, T-shape, rectangle, semicircle and special form, Adjustable Screw jack( Hollow pipe)The diameter of ... 15453553.14150x150x50.89170x65x500.754.78453553.77150x150x50.89170x65x500.755.41Adjustable Screw jack( Solid bar)Diameter(mm)Height(mm)Threw rodBase plate ... .89170x65x500.757.87456007.49150x150x50.89170x65x500.759.13 Screw Jack