The Mountz BLRTSX28z-H Brushless Rotary Torque Transducer, Range 10 - 28 Oz-in, Drive 1/4", # 170225 is for use with most hand tools, power tools or rotational measurement applications. The common "brush bounce" that plagues the accuracy testing of pulse tools is cured when using a brushless rotary transducer. The Mountz BLRTSX connects between the power tool and the joint. Monitors actual torque being applied from the driver to the fastener. Features an instant auto-recognition system of the BLRTSX connected to the PTT.