Controlled Bolting Tools Enerpac's Bolting Solutions cater to the complete bolting work-flow, ensuring joint integrity in a variety of applications throughout industry. Enerpac offers a variety of controlled tightening options to best meet the requirements of your application, ranging from manual torque multipliers, to pneumatic torque wrenches, as well as a comprehensive range of hydraulic torque wrenches and interconnectable bolt tensioning tools. Controlled Tightening Enerpac offers a variety of controlled tightening tools to best meet the requirements of your application, ranging from manual torque multipliers, to pneumatic and electric torque wrenches, as well as a comprehensive range of hydraulic torque wrenches and interconnectable bolt tensioning tools.