Pneumatic power impact wrenches deliver extremely high power to fasten and loosen bolts or nuts for quick assembling and disassembling jobs. The square drive size and capacity at which different types of handles are provided differ from manufacturer to manufacturer as shown in the pneumatic tools comparison table on page. Choose the most suitable model for the 13 mm to 76 mm sized bolt capacity. The specifications listed here are for your reference. If you wish to order impact wrenches from a specific manufacturer, please refer to the companison table listing major international manufaacturers and product model numbers on page 59-7.