Wheeler Engineering Professional Screwdriver Set w/FAT Wrench 10-65 in-lbs Adjustment Range 0.25in Driver Hollow-Ground Flat Bits Texturized Rubber. A.T. Wrench Screwdriver Set. The combination of our iconic F.A.T. Wrench with 98 screwdriver bits and adapters make this set a gunsmiths dream. With a torque range of 10-65 in-lbs the F.A.T. Wrench is ideal for a variety of fastening jobs. Both the F.A.T. Wrench and the 0.25in driver handle feature a texturized rubber grip to create a comfortable and secure hold. Specifications for Wheeler Engineering Professional Screwdriver Set w/FAT Wrench: Manufacturer: Wheeler Engineering Torque Adjustment Range: Various Accuracy: +/-5percent Dimensions: 11x9 in Color: Black/Gold Quantity: 100 Features of Wheeler Engineering Professional Screwdriver Set w/FAT Wrench Included F.A.T. Wrench Achieves Perfect Torque Without Causing Damage To The Fastener; Molded Case Organizes Bits And Drivers; Bits Are Coated In Black Phosphate To Prevent Rust; Hollow-Ground Flat Bits Create Precise Fit To Prevent Damage To Screws And Firearms; Package Contents: Wheeler Engineering Professional Screwdriver Set F.A.T. Wrench Bits And Drivers Molded Organizes Case Wheeler Engineering 4001004: Professional Screwdriver Set w/FAT Wrench 10-65 in-lbs Adjustment Range 0.25in Driver Hollow-Ground Flat Bits Texturized Rubber Grip Black Phosphate 100-Pack