... ,oil testing ,perforating, oil extraction testing. Manual single ram BOP for cableBOP Model :3FZ14-21Main technical parameters:Bore :2 1/2 ... *450 (mm)Weight:300kg (601.387LB)Shear ram BOP for cable:mainly used for sealing cables during well drilling, oil testing , perforating ... : manual and hydraulic in their forms: flange or union structures for the upper and lower connection.