Comparison : Item # PTJ-5S, 4.48 Inch Square (in²) Effective Cylinder Area Spring Seater Stressing Jack with Hydraulic Pump
Item # PTJ-5P, 4.48 Inch Square (in²) Effective Cylinder Area Power Seater Stressing Jack with Hydraulic Pump
Item # PTJ-6S, 6.28 Inch Square (in²) Effective Cylinder Area Spring Seater Stressing Jack with Hydraulic Pump
Item # PTJ-6P, 6.28 Inch Square (in²) Effective Cylinder Area Power Seater Stressing Jack with Hydraulic Pump
Item # 5DA1, 6.28 Inch Square (in²) Effective Cylinder Area Power Seater Stressing Jack with Hydraulic Pump