These dumbbells are the perfect start to your home gym equipment collection they help tone and sculpt your arms shoulders and back as you can perform a range of exercises with them the hex shape makes it easy to stack your dumbbells and means they wont roll away the interior is made of cast iron with a strong neoprene coat for a comfy grip these brilliant dumbbells help tone and sculpt your arms shoulders and back interior made of cast iron with strong and neoprene coat for comfy gri