I recently purchased a set of casters for my workspace and the FOOTMASTER option is truly a game-changer. The leveling feature ensures stability on even the most uneven surfaces, and the aluminum construction is both lightweight and durable... The black finish is sleek and professional, perfect for an industrial setting. My only small critique is that the installation instructions could have been a bit clearer. Overall, I highly recommend the FOOTMASTER GD 120S BLK leveling mounting caster for anyone in need of high-quality industrial and scientific material handling products..