Milwaukee's PACKOUT? Customizable Work Top is constructed with impact-resistant polymers and 1/2? marine grade wood top that provides you with a durable, portable work surface for assembly and writing tasks. As part of Milwaukee's PACKOUT? Modular Storage, the worktop allows you to customize your storage system for easy transportation and organization of tools and accessories. The customizable worktop has a 50 lb weight capacity and a fastener-ready design, which allows you to attach vises, chargers, and a variety of other items to the top of your PACKOUT? stack for easy and secure transport. The MILWAUKEE? PACKOUT? Modular Storage System is the industry's most durable and versatile storage system.