ACCURACY: +/- 2 inch/pounds up to 40 inch/pounds; 40 – 65 is +/- 5%. The FAT wrench measures 2 L x 2 W x 6.25 H inches and the storage case measures 7.5 L x 5.5 W x 1.75 H inches 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 inch/pounds to 65 inch/pounds DURABLE: Bits are made of S2 tool steel and hardened to 56-58 Rockwell “C”