Stackable ER20 Collet Rack

This is a collet rack for ER20 collets that is stackable. It holds 30 collets in six different columns of five collets each. There is room to apply a label for each column if you want. Four of these racks will hold all the imperial and metric collet sizes available. I chose not to print the collet sizes into the rack so they can be more universal. It allows each user to decide which sizes go where.