The Hareline Foamanizer is a modular desk organization system that allows you to add different sections and create a storage method that fits your bench. The 18.5” Large Tool and Thread Caddy holds a lot of tools and thread. This can hold stackers, scissors, bobbins and more. The sides connect to hold glue, thread and other accessories. The sides flex out with connectors. These are quite light weight for overseas tyers for shipping vs. our wood caddies. Kit includes spacers, rods, base and die cut foam top/middle section. Easy to put together. The thread risers hold 5 spools on each stand of standard thread/tinsel.