MS10K: Place the Manual Power-Spreader tips between the flange faces and turn the ratchet handle. The ratcheting action is transformed into 10,000 lbs. of spreading force and up to 3" of gap.
(pictured left-top)

HS10K: With the Hydraulic Power Spreader, a hydraulic cylinder replaces the ratchet handle. Power one or multiple Power-Spreaders easily using a standard hand pump. A pair of Power-Spreaders supply 20,000 lbs. of spreading force and 3" of travel; ample for gasket replacement or turning of blinds.
(pictured left-bottom)