All Coenen Mechanical Toolboxes are in 5S condition. The 5 “S-words” refer to five Japanese words (Seiri, Seiton, Seiso, Seiketsu, and Shitsuke) roughly translated to: sorting, straightening, systematic cleaning, standardizing, and sustaining. Applying this common-sense approach to organization and housekeeping contributes intuitively to safety as well.