SPEEDJAW 3 in Ductile Iron Bench Vise Double Prong Hook this tool gives 30% more Item Weight:11.0 oz this tool gives 30% more power A: They are designed for 5 8 inch coarse thread (USS) bolts and screws non slip grip 3 INCH JAWS 3 inch wide jaws open to a maximum of 3 1 4 inches with a 1 3 8 inch throat depth RATCHETING HANDLE ratcheting handle allows fine adjustment and increased mounting options beyond the edge of a work bench DETACHABLE BASE MOUNT unit clamps onto a 360 degree inscribed posi clock disc that allows for precise rotation and lets the vise be stored out of the way when not in use CAST DUCTILE IRON vise is made from high strength powder coated cast ductile iron that can stand up to long use COMPATIBLE VISE PADS compatible with SPEEDJAW 93162 Curved