The Metal Stays from Quilts Illustrated are designed for use with either the PS054 Tool Tote or the PS056 Boxy Tote.  Both patterns designed by Penny Sturges the Boxy Tote was designed to hold the Singer Featherweight, the Tool Tote is designed with multiple pockets to hold a variety of tools.  One set of stays is included with the pattern, additional stays are needed to make more totes.

PSH054 METAL STAYS, Penny Sturges, Quilts Illustrated