FIRST Tech Challenge Perimeter StrapThis strap is used with the FIRST Tech Challenge Perimeter to help keep the walls square during game play. Description Specifications Documentation Every FTC field needs a strap or two to hold the field together. The hook fits perfectly around the bottom of the center FTC Frame Rail Extrusion and connects to the opposite side of the perimeter of a standard FTC field. Two of these straps will lay in a criss cross pattern underneath the Soft Tiles of