Here is another adjustable dumbbell that replaces multiple weights and saves you space. The SNODE AD80 Cast Iron Dumbbells can be adjusted from 10 to 80lbs. To adjust it, simply turn the adjustment dial to adjust the weight on both sides.
The AD80 measures 18.11 inches by 6.69 inches. It has a non-slip handle, ductile iron base, and cast iron plates. You can adjust the weight in 10lbs increments.