Alvantor Hex Rubber Coated Dumbbell 10lb-50lb

Walmart

Black hexagonal shape matches exactly, Chrome knurled handle matches exactly, Rubber/coated material matches, No visible brand logo on the dumbbell head, consistent with source, 15LB weight is highly plausible for the exercises shown, Overall form factor and dimensions are consistent

Titan Fitness Free Weights Black Rubber Coated Hex Dumbbell

Titan Fitness

Black hexagonal shape matches exactly, Chrome knurled handle matches exactly, Rubber/coated material matches, No visible brand logo on the dumbbell head, consistent with source, Overall form factor and dimensions are consistent

Balancefrom Rubber Encased Hex Dumbbells

Walmart

Black hexagonal shape matches, Chrome knurled handle matches, Rubber/coated material matches, No visible brand logo on the dumbbell head, consistent with source