The Hareline Foamanizer Standard 16″ Spool Module is a modular desk organization system that allows you to add different sections and create a storage method that fits your bench. The 16” Standard 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. For overseas tyers, these are lighter weight and are cheaper to cheap than our wood caddies. Makes a great addition on the bench.