25% more drawer weight capacity than 540 series. Soft close slides – helps maintain organization, to accidental opening.Ball-bearing slides provide 125 lbs of drawer load capacity. Premium paint: to hydraulic fluids, oils, greases, and skydrol.18 gauge steel cabinets and drawers providing robust support for tools and equipment.Premium tubular lock keeping contents secure.Full extension drawers providing easy access to stored items. Includes drawer liners.