Wheeler Engineering FAT (Firearm Accurizing Torque) Torque Wrench ScrewdriverThe Wheeler Engineering FAT Wrench is a hand driven, click clutch style torque wrench that is very useful for applying the necessary torque to most firearm and firearm accessory fasteners. The FAT Wrench features a thick ergonomic handle, a standard 1 4" drive tip, and can be used to apply torque from 10 to 65 in lbs at 5 in lb increments. Common uses include, but are not limited to: installation of scope ring and base screws, action screws and