The Explorer is the finest tool caddy on the market with options to store tools, hold thread, magnets for scissors or pockets to hold hooks and beads. The Explorer has it all! It comes standard with 3 spool pins and 2 super strong Neodymium Disc Magnets. 5 1/2" x 4" Machined Billet Aluminum. Fits any post that measures 3/8" including Peak, Renzetti, Regal, Griffin and Dyna-King. Made in he USA!