The TSTAK foam insert is an auxiliary product to the TSTAK tool storage system. The removable foam blocks allow the user to easily customize for the needs of various power tools and equipment. Constructed with strong and rigid - but lightweight - material that keeps equipment safe and protected. Inserts give flexibility and ability for multi-use customization. Fits DWST17808 (SKU 301063), DWST17807 (SKU 301062), DWST17805 (SKU 301059) tool storage boxes.