The Master Lock M40KA-0313 Magnum keyed alike steel shrouded padlocks offer streamlined operations and vigorous security, with multiple locks that open with the same key. Simplified access without fumbling for keys means a well-run jobsite or facility, and a scalable solution that can be taken across locations. Perfect for construction, real estate, and facilities managers who need to give large numbers of people access. Stop losing time and profits to low-level hassles by making it easy to manage and secure tools, across the entire organization. These professional-grade, shrouded padlocks offer additional protection against prying, hammering and drilling and contain upgraded internal components to prevent picking. The simplified security solution for professional contractors, from the most recognized brand in padlocks.