Best Craft Organizer insert with 6 long channels that are open to each other at the top and bottom.

Fits inside 1″ drawer. Insert is clear.

Outside dimensions:
height: 7/8″ (2.2cm)
depth: 12 3/4″ (32.3cm)
width: 11 3/4″  (29.8cm)

Compartment Dimensions:
1 3/4″ x 12 1/4″ x 13/16″
(Compartments taper slightly)