Heavy spinners like hit records:

from Jay Z – Dead Presidents II Lyrics on Rap Genius

Meaning

A spinner is a hubcap that spins independent of the wheel’s motion. When a record (records spin too) sells a lot of copies it “goes gold” or platinum (these are heavy metals)

Gold and Platinum Records:

But since spinners weren’t out in 1996, it’s more likely that he meant heavy spinners as in hit records or hot songs get major rotation on a radio station. Also known as “spins” for the movement of the record on the player.

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