No T-Nuts Included; Must Buy Separately

I posted a question about these: Do these come with t-nuts? One person said, no, just the casters. Another said the nuts come with them. Both, oddly, are true statements. After drilling out the holes in the furniture, a t-nut that has 3 or 4 prongs is hammered flush into the end of the furniture leg, and then one screws the stem into both the threaded t-nut AND the drilled hole in the furniture leg. These casters do NOT have t-nuts. They do have nuts attached, presumably to tighten the caster once screwed into the leg. T-nuts provide a layer of integrity to each leg so the casters don't chew up the wood inside the leg with repeated movement. Ergo, I will be buying the t-nuts to prolong the life of the legs of the side table I am putting these casters on. Casters are the right size and made well enough for my purposes. Would have been helpful to know I needed t-nuts for best assembly and casters not falling off soon. Should have that info. in the Amazon explanation. Image of pronged t-nut attached.

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