These rubber dumbbells come in a unique hexagonal shape that keeps them from rolling away when you put them down on any surface. The hexagonal head shape also aids in easy storage on the rack. The high-grade rubber-coated construction of these pinned cast iron head fitness dumbbells lends adequate durability and protection for long-term use. An ideal choice for both professionals and fitness enthusiasts! Each hex dumbbells set has an ergonomically contoured knurled handlebar in chrome-plated, solid steel, providing a slip-resistant and secure grip to the user. It greatly reduces the risk of accidentally losing your hand grip while training and injuring yourself. These hex weights dumbbells can offer an incredible amount of versatility to your workout routine. Use it to exercise all major muscle groups-from arms, chest, and back to core and legs.