Smart-Torq EASY TO SELECT PRECISE 1 INCH-LB INCREMENTS ELIMINATES GUESSWORK A properly torqued base is critical to mounting a scope for accuracy, whether on a rail system or receiver. Adhering to the manufacturer?s torque specifications assures that the scope will be securely mounted to the gun. Overtightening rings is the number one cause of scope damage/failure. Most scope rings are steel, scope tubes are aluminum. Always follow the manufacturer?s precise recommendation for torque, and never crush a scope tube again. Easily tighten fasteners to the manufacturer?s recommendation when adding accessories or changing/upgrading the stock. Correctly torquing the screws that attach the stock to a barrel assures you of safe and accurate operation. The ergonomic rubberized grip and Force Assist? makes tightening screws and fasteners to precise torque settings accurate and easy. Bit set fits most optics mounting ring and base brands.