The 197170036 Cleco LiveWire I-Wrench Interchangeable Open End Head, Torque Capacity (Nm): 250 is for applications with limited clearance or fixed bolt sizes. The 197170036 Cleco LiveWire I-Wrench Interchangeable Open End Head, Torque Capacity (Nm): 250 comes without tool recognition capability, but is machined ready for a tool recognition chip.