MD Buddy Vinyl Neoprene Dumbbell Rack 

This steel constructed dumbbell rack is designed to hold neoprene aerobic dumbbells sizes 1 LB, 2 LB, 3 LB, 4 LB, 5 LB, 6 LB, 7 LB, 8 LB, 9 LB, 10 LB. Includes a bar to lock in the dumbbells (lock not included). Includes 4 heavy duty castors, 2 of them able to lock into place keeping the rack from moving.

Progression Neoprene Dumbbells

Progression Neoprene Dumbbell (flamanfitness.com)