The SPX Power Team Pedator line of Torque Wrenches and Hydraulic Pumps is probably the best complete system on the market today. Select between square drive and low profile for bolts ranging in size from under 1" to over 6". The Predator pumps are designed specifically for torque wrench applications and not lifting applications. The pumps deliver a much smoother power curve throughout the pressure curve delivering far more power than traditional 2 stage pumps. Contact the experts at Ohio Power Tool for questions about set up and applications.