... jack(adjustable jack,adjustable base jack plate,screw jack ),and have aluminium base jack adjustable base jack(adjustable jack,adjustable base jack plate,screw jack,jack,screw )steel jack ... x 135 x110x6mmT48x 914 x 160 x160x6mmaluminium jack:Φ48x 6.35x 638mmwe can design difference ... & produce the height quality base jack. adjustable base jack(adjustable jack,adjustable base jack plate,screw jack )