Wheeler Firearms Accurizing Torque Wrench with Inch/Pounds Measurement, Bits and Storage Case for Scope Mounting, Gunsmithing and Maintenance ACCURACY: +/- 2 in/lbs up to 40 in/lbs; 40  65 is +/- 5% EASE OF USE: Apply, repeatable, accurate torque settings to scope rings, guard screws, windage screws and base screws, which aids in accuracy and decreases the opportunity for problems in the field RELIABLE: Torque adjustment range from 10 in/lbs to 65 in/lbs DURABLE: Bits are made of S2 tool steel and hardened to 56-58 Rockwell C INCLUDES: 10 bits (hex to square adapter, #10 flat blade, #32 flat blade, #11 flat blade, 5/32 hex, 7/64 hex, 3/32 hex, T20 torx, T15 torx and Leupold specialty flat blade),  socket and a convenient plastic storage case