This versatile and innovative tool box is built to use on any jobsite. Constructed with impact resistant polymers for maximum strength and durability. The industrial grade extension handle and 9" all-terrain wheels allow you to easily move upstairs or through rugged terrain. Includes metal reinforced corners and locking point. The IP65 rated weather seal keeps out rain and debris. 250lbs weight capacity. Interior organizer tray to help keep your items in place. Compatible with all Milwaukee PACKOUT modular storage products.