Waterloo/Craftsman went through at least 3 ever cheaper drawer stop arrangements that I know of. The first one used a clip that had an extra fold in it so you could pull the clip out with the tip of your finger to release the drawer. Then next generation clip eliminated the finger grasp and you now needed a screw driver to pull the clip out of the hole. They are completely interchangable. Later boxes eliminated the clip altogether and used a bent tab that was part of the drawer sheet metal. It came with a shim that looks like a feeler gauge and it lets the drawer override the tab. To reinstall, you bend the tab back out if necessary and the slide rides over the tab that pops out to lock the drawer slide. The third method is really cheap and sleazy. I have the two older types of clips on my boxes at home and I had the bent tab on an assigned to me box at work, so I am familiar with all three. The old red and grays used the clips. There is only one length that I know of for Sears boxes. The current clip looks a little different than the older two but is the correct replacement. I have not used it so I am not sure if it can be unlatched bare handed or not. This is the one on ebay or from Waterloo. I guess it was/is OEM at some point.
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