This is a divider for the Westward 31TT94 parts bin. (Grainger has it listed as Westward, though when it came, it is branded as Shuter. I don't know the parts number for the Shuter.) These will allow you to have more than just the one divider per smaller drawer.
I am sure the part will fit with other bins that use this same type of "modular" divider.
I included 2 STLs:
78.5mm version should be a perfect fit (the same amount of wiggle as the original part)
79mm version should be a tight fit that doesn't have any wobble at all.
Centered-78-5_WESTWARD-partsBin-Divider.stl | 49.9KB | |
Centered-79mmWESTWARD-partsBin-Divider.stl | 49.9KB |