Load Capacity 4400 Pound Maximum Lifting Height 36 Inches Brand OPERMAXER Color Galvanized Style Floor Jack Vehicle Service Type No Material Alloy Steel Item Weight 13.99 Kilograms Minimum Height 19 Inches About this item ?HIGH QUALITY?This adjustable support jack is made of high-quality steel with colored zinc surface, anti-corrosion and resistance to support buildings. Each jack has a load capacity of 2 tonnes (4400 lbs) ?SPECIFICATIONS?Range of adjustment: 19" - 36"?1'7" - 3') ; base plate dimension: 5" x 5" x 0.20"; top plate dimension: 4" x 4" x 0.28"; M22 thread; A swivel bar(Only ONE) ?TEMPORARY OR SECONDARY SUPPORT?Not intended as permanent supports; House floor jacks can provide temporary or additional support during construction and maintenance, for leveling and stabilizing floor beams and joists. Use an adjustable floor jack to temporarily secure weak floors, crawl spaces, heavy-duty areas, porches, decks, stairs or roof trusses ?EASY INSTALLATION?Adjustable jacks come with double carriage locks for added strength and security. Equipped with a swivel bar, it allows the top plate to rotate 360 . With the included screws and nuts, you can easily install the house jack in minutes ?SAFETY?The floor jack is fully adjustable and features a safety locking M22 nut and pins for added strength and security