Check the listing for details. CURSOR FITNESS ADJUSTABLE DUMBBELLS, 5-IN-1 QUICK ADJUSTABLE WEIGHTS - BLACK/RED. Condition: New other (see details). Listed at 215.45 USD. • - The patented weight dial system securely holds dumbbell plates on the handle through 5 locking grooves. Lifting the dumbbell automatically engages the lock, preventing the plates from falling off and ensuring safer usage, firmness, and stability.