Adjustable under load: these heavy duty leveling feet feature a clever loose rotation design that decouples the threaded rod from the base. This allows you to turn the thread easily even when the machine or furniture is already bearing weight, so you can correct uneven floors or wobbling without lifting the device. materials: the height-adjustable feet are made of galvanized steel with a polished, rust-resistant surface for long-term use in demanding environments. The reinforced base is made of hard TPE, offering non-slip performance, dimensional stability, quiet movement and floor protection. Secure load capacity: each adjustable leveling foot supports up to 200 kg, so the full set of 4 can carry up to 800 kg when installed correctly. Precisely cut, deep and even M8 threads ensure solid engagement and even force distribution, while the thickened nut design further increases stability and safety. Complete set and dimensions: the package includes 4 adjustable machine feet and 1 matching mounting key for quick installation and adjustment.Each foot has a 40 mm rubber pad diameter, M8 thread and 50 mm screw length.Due to the loose twist structure,a length tolerance of approximately 0-5 mm may occur,which does not affect function or reliability. Wide application: these adjustable feet heavy duty are ideal for lifting and leveling work tables, cabinets, sofas, coffee tables, shelves and desks, as well as heavy machinery, equipment and industrial systems. Perfect for home, office, catering kitchens and workshops. Color: As Shown Material: Metal+Rubber Package Contents: 4*foot pads 1*wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.