Knaack chests offer secure and durable tool storage solutions that are easy to handle, and can be moved around the jobsite or into a work vehicle with minimal effort. As the strongest single deadbolt-style locking mechanism, the Knaack lock system keeps all your tools safely protected. Piano boxes are available in a variety of sizes that feature 16-gauge steel body construction and fully arc-welded seams for added strength. Complete with 12-gauge caster-ready skids, seven-gauge cover tangs and ergonomically designed recessed handles, Knaack job boxes are designed to keep your jobsite organized and secure so that you can be more efficient.