LINDSTROM introduces a series of preset torque range of 4 to 450 Newton centimeters (Ncm), 6 to 100 inch ounces and 1.5 to 40 inch pounds with an accuracy of +/-6%. All model feature. Stainless steel 1/4" Hex driver allows use of all standard drive bits (Phillip, Torx, etc.) Calibrated to N.I.S.T. standard.