The Wheeler 38-Piece F.A.T. Wrench Screwdriver Set pairs the F.A.T. Wrench with 36 carefully selected bits and adapters for gunsmithing projects that demand precision. Adjustable torque from 10 to 65 in-lbs. delivers precise, repeatable results on scope ring and base fasteners, helping shooters avoid overtightening that can damage firearms or optics. Black phosphate-coated bits resist corrosion, and everything stores in a stackable hard case that nests with other Wheeler sets. Adjustable torque range of 10-65 in-lbs. for precise, repeatable results Prevents overtightening that can damage fasteners Complete assortment of Flat, Phillips, SAE/Metric Hex, Star, and Specialty bits fits most firearm fasteners Hollow-ground flat bits precision fit to prevent damage to screws and firearms Black phosphate coating on bits protects against rust and corrosion Latching hard-sided case organizes and protects contents during transport and storage