The Everlast Dumbbell Sets are made from a strong and solid cast iron, these dumbbells are built to last. Whether you're looking to build more muscle or tone up you can do both with this amazing set. The bars include knurled polyurethane grips. Includes spinlocks which are also easy to tighten and then remove when it's time to add more weight. 15kg Set - Includes 4 x 2.5kg, 4 x 1.25kg, - 2 x plastic dumbbell bars - 4 x spinlocks - Maximum bar weight 30kg per bar - Easy to split for easy storage Total weight 15kg 20kg Set - Includes 4 x 2.5kg, 8 x 1.25kg, - 2 x plastic dumbbell bars - 4 x spinlocks - Maximum bar weight 30kg per bar - Easy to split for easy storage Total weight 15kg 25kg Set - Includes 8 x 2.5kg, 4 x 1.25kg, - 2 x plastic dumbbell bars - 4 x spinlocks - Maximum bar weight 30kg per bar - Easy to split for easy storage Total weight 25kg 30kg Set - Includes 8 x 2.5kg, 8 x 1.25kg, - 2 x plastic dumbbell bars - 4 x spinlocks - Maximum bar weight 30kg per bar - Easy to split for easy storage Total weight 30kg