Tool chest support feet

I bought a Yukon 9 drawer tool chest from Harbor Freight as it was less expensive than the other brands but still weighed in at 186 pounds which was heavy enough to stay put under my dancing P2S. I wanted the box to rest on the support points that were engineered for the caster base and not have it sit on the rolled steel edges You cane see the channel on two sides in the pictures. It fits the box models 57439, 57805, 56613. 57440 which are all the same boxes just different colors. I'm sure it will fit many others as well regardless of brand. Nothing, Yukon or Harbor Freight specific.