This is the Park Tool TW-5.2 Clicker Torque Wrench. As various lightweight materials become more common, torque wrench use in the shop is no longer an option-it's a must have tool for any mechanic. The TW-5.2 is a high quality, ratcheting, click type torque wrench that will accurately measure and apply the proper amount of torque to a component's threaded fastener. It is designed for lower torque settings that a shop or consumer would use for proper seat post, seat clamp and handlebar / stem installation. Comes with its own protective case. Note: This product does not include bits or sockets. Must be purchased separately. Features: Ratcheting 3/8" drive Reads and registers for both Left hand and Right hand threading Dial-adjust system allows desired torque setting to be preset 2-14 Newton Meter range (18-124 Inch Pounds) Adjustable to 0.4 Nm increments Conversion scale on tool body 22.9cm (9") length Calibrated to be accurate to +/- 4% NOTE: Torque wrenches are precision instruments and are not intended for use as a general-purpose ratcheting driver. Do not exceed 14Nm when using the TW-5.2