Introducing the Foam Insert by POWERTEC. This tool case insert was specifically designed to accommodate for TSTAK System. The foam inserts are made out of the same highly durable and protective foam material used by professionals woodworkers from all around the world. The cushioned foam is lightweight, yet strong and rigid enough to handle an assortment of heavy duty task - including keeping your power tools and equipment safe and out of harms way. Premium Design with Optimal Customization The insert possesses 6 total layers – with four top layers of pre-cut cubed sections lightly attached to dual non-scored bottom layers. Each cube (foam block) is easily removed by hand, and doesn’t require any knives or tools. This means TRUE CUSTOMIZATION for your tool cases or organizers, as you’ll be able to tailor-make the protective layers to accommodate your valuables and individual equipment. Additionally, you’ll find that the inserts fit comfortably into their compatible boxes. List of Compatible with TSTAK Boxes DWST17808 DWST17807 DWST17805 POWERTEC is a leading manufacturer of high quality woodworking tools and accessories, machines, and an assortment of OEM replacement parts. We are committed to exceeding expectations, while bringing the latest innovations, technology, and product development to the industry.