In Line Bottle Jack for Easy Jack Position. 10208 is a 20-Ton In-Line Shorty bottle jack. Its in-line pump designed makes the jack positioning under load with the ease. The easy accessible pumping system eliminates off-center pumping force. Its machined and polished cylinders with die cut threads provide non-abrasive leak free, durable performance. At the same time, this bottle jack also features the built-in bypass device to protect hydraulic system from over pumping damage. It also features the heat treated extension screw that allows low pick up height adjustment and maximum lift height as well as the unique cross type forced release valve that assures positive load control. In addition, the wide, rugged base provides the extra stability and strength. Built-In Bypass Device - Heat-Treated Extension Screw, In-Line Pump Design with Wide and Rugged Base - Unique Cross Type Forged Release Valve Specifications- Capacity: 20-Ton, Base Size: 7-3/4 in. x 5 in. minimum Height: 6-1/2 in., maximum Height: 11-1/4 in., GW: 23 lbs. Material: Steel.