I have two of these (selling together including adjusting rod). The Ellis Heavy Duty Steel Lifting Shore provides temporary or permanent shoring support in heavy load applications in both commercial and residential structures. Equipped with the Ellis MFG patented Thrust Bearing technology these shores can lift up to 10x more than standard screw jacks. Offered in various heights ranging from 10" to over 14' and with a safe load rating up to 56,000 lbs.
Model: STL-31HD, 31" to 56" lifting range, 40,000 lbs capacity each, 55 lb tare weight, $689.89 list price plus $45 for the adjusting rod. My cost was $1713 including freight and tax. I will deliver within 100 miles of Marblehead, Ohio.