The Sunex Tools 44-ton Truck Axle Jack with Air Return, No. 6744, has a fully air-actuated, springless design that eliminates spring and spring retainer weathering, rusting and damage. A rust-prohibitive flash-chromed ram, with a simple control knob for raising and lowering, allows the saddle to rise smoothly. According to the company, the saddle rising speed is improved by 35 percent and downward resistance from the springs is no longer a factor. Two stacking adapters allow the jack to reach from 8.2” to 21.1”. A sturdy 1-pc handle eliminates wobble and reaches 54”. The jack is tested and certified to the latest ASME PALD requirements, according to the company.