I used the long handle ratchets to get more torque on 3/4 bolts without using a cheater bar. I work at an injection molding shop making plastic parts. Depending on what is being made, but for even small parts like small plastic bowls, the molds that form the melted plastic may weigh 1,500 - 5,000 lbs and are held closed in large presses ranging from 55 tons (some or smaller) to 660 tons (many are larger - for large automotive parts 5-6,000 ton presses - YIKES!). At our shop we run smaller tools and presses but even at that, a 300 ton press (injection molding machine) will have a a mold that weighs approximately 2,500 lbs and will have 2 or 3 3/4 bolts per side clamping it to the press. The melted plastic may be injected in a 350 - 550 F and 30,000 psi and at about 3-5 inches/sec. We are middle of the road typical molding. There are a lot of extreme pressures/speeds out there not to mention magnesium and other exotics.