<p>Note: Conventional torque wrenches only work with expensive socket wrenches, and usually only with one size of those. Not so with the new TORK-GRIP Universal Torque Wrench! This tool is complete all by itself, and will attach firmly to any non-recessed fastener, nut or bolt. Compatible With All Of Your Existing Fastener Tools! For recessed fasteners, such as recessed crank bolts, Allen bolts of all sorts, Phillips and slotted-head screws, the TORK-GRIP Universal Torque Wrench can grab onto any 1/4", 3/8", 1/2" or even 3/4" drive socket, any Allen wrench, or any screwdriver-type handle! An Indispensable Tool for All Missile/Launcher Repairs It is well known that it is absolutely impossible to do any missile/launcher repair more complicated than painting the screw heads without a torque wrench. Unfortunately, the old-fashioned torque wrenches available in the past have been useless by themselves, requiring an expensive set of ratchet socket wrenches to make them work. Not so with the revolutionary TORK-GRIP Universal Torque Wrench! Fully compatible with S.A.E., Metric, Whitworth systems! "Real World" ® Calibrations! Not visible on the prototype shown in the photo, the TORK-GRIP Universal Torque Wrench features the Real World ® calibration system! Old-fashioned torque wrenches from our pitiful competitors are calibrated in meaningless numbers. The TORK-GRIP Universal Torque Wrench, however is clearly marked in easily understandable calibration marks instead: Inertial Impact Alignment Tool Works as an inertial impact alignment tool (also known as a "hammer"), too! The TORK-GRIP Universal Torque Wrench is a solid, hefty tool, and can serve as a hammer in case of need. If the bulk of the tool itself isn't sufficient for your hammering needs, you can clamp any heavy metal object into its powerful curved jaws to increase its heft and hitting power! Great for Self Defense Too! The TORK-GRIP Universal Torque Wrench is also extremely useful in medium-duty hand-to-hand combat, due to its superior reach and ruggedness. You can even clamp a knife blade into the jaws when needed for that extra "edge" over your opponent. </p>