Warne TW65 Torque Wrench The TW65 Torque Wrench tool allows the shooter to precisely tighten the 1/2 hex nut to the proper torque setting of 65 in/lb. This unit is a must have when installing Warnes Tactical and AR – 15 Flat Top Rings. socket Preset at 65 in/lb Audible beep and red light illuminated when proper torque is met