50 Ton Hydraulic Bottle Jack • Easiest accessible pumping system eliminates off-center pumping force for the most efficient operation • Extra large base provides added stability and strength • Serrated heat-treated saddle provides generous lifting area and secure grip • Heat-treated extension screw allows low pick-up height adjustment and maximum lift height • U.S. Patented built-in by-pass device protects hydraulic system from overpumping damage • Unique cross-type forged release valve assures positive control • A wide, rugged base provides stability and strength • Critical stress points are reinforced in all models for added durability and dependability