Dumbbell exercises are fantastic at developing strength, toning and conditioning the upper body. Performed free standing or on a dumbbell bench you can build your strength by adding extra weights. York Fitness Vinyl Spinlock Dumbbell Single Dumbbells provide the first stepping stones into weight training. The set is an ideal starting point for home training workouts. The quality vinyl plates are easy to load onto the spinlock bars with the iconic red spinlocks securely keeping them in place. The vinyl dumbbell sleeve gives a comfortable grip to the well balanced dumbbells.