Wheeler Engineering 100-Piece FAT Wrench Screwdriver Set - Drivers & Bits

Every bit a professional gunsmith needs — and the torque wrench to use them correctly. The Wheeler 100-Piece Professional F.A.T. Wrench Screwdriver Set combines the iconic Firearm Accurizing Torque wrench with 97 screwdriver bits and adapters covering flat, Phillips, square, SAE/metric hex, Torx, and specialty fasteners in a single latching hard case.

The Wheeler 100-Piece Professional F.A.T. Wrench Screwdriver Set is a comprehensive gunsmithing driver and torque wrench set featuring an adjustable F.A.T. Wrench with a 10–65 in-lb torque range, a magnetized 1/4-inch driver, and 97 bits and adapters organized in a premium latching hard case.

Four features make this the go-to set for serious gunsmiths and dedicated enthusiasts. The F.A.T. Wrench (Firearm Accurizing Torque) provides an adjustable torque range of 10–65 in-lbs, covering the full spectrum of common gunsmithing torque values for scope bases, rings, action screws, and other precision fasteners — preventing both the undertorqued connections that shift under recoil and the overtorqued screws that strip threads. Hollow-ground flat bits create a precise fit in flat-head screws, distributing force across the full blade width rather than the edges, which prevents the cam-out and burring that straight-ground bits cause on precision firearm fasteners. Magnetized driver tips on both the F.A.T. Wrench and the 1/4-inch driver hold bits securely during use, eliminating the dropped-bit frustration that non-magnetized drivers cause during close-tolerance gunsmithing work. Phosphate coating on all bits and shafts prevents rust and corrosion, protecting the tools through shop use, cleaning solvents, and storage conditions that untreated steel cannot survive.

Compatible with standard 1/4-inch bit drive adapters. Torque range: 10–65 in-lbs. Includes flat, Phillips, square, SAE hex, metric hex, Torx, and specialty bits.

F.A.T. Wrench and 1/4-inch driver with rubber over-molded handles. Phosphate-coated bits and shafts. Premium latching hard case. 100-piece total set.

Ideal for gunsmiths, armorer courses, competitive shooters who perform their own builds, and serious enthusiasts who want the right torque value on every fastener.

By Wheeler Engineering. Standard Wheeler warranty applies.