I have the six inch version of this vise. It did not have the hydraulic booster and foot pedal. The short stroke cylinder was attached to a slightly modified Wilton style vise nut. When pressure was applied it would move the vise nut a fraction of an inch to the rear. Otherwise it works just like a normal vise with the exception of the added length of the vise and the reduction in jaw opening. Normally a 600s will open to ten inches, the hydraulic 600s is limited to a six inch opening. To most people that see it, it is just a large vise.