(2) Save-A-Step RV Motorhome Camper Trailer Step Support Jacks / Adjusts 4 5/8″ to 8″ Pair of “Save-A-Step” RV step support jacks. Increases the life of entry steps by adding additional support. The “Save-A-Step” jacks add greater stability and reduces step deflection (downward motion) when weight is applied to the step. Step Jacks are sold in pairs and should be placed at each end of the step tread. Use the “Save-A-Step” jacks on the bottom step or the next step up from the bottom. Each jacks holds 1,000 lbs. and adjusts from a minimum height of 4 5/8″ to a maximum height of 8″.