SINGLE SOLID CAST IRON CORE - Constructed of high-quality solid cast iron core to add more durability & stability. Will not break or bend after repeated use HEXAGONAL RUBBER HEADS -Special shape prevents rolling away from the storage place or during your floor exercise, while rubber coating reduces noise and protects your workout area NON SLIP-GRIP - Contoured textured Chrome handle minimizes hand fatigue while maximizing grip comfort and controlling VERSATILE WORKOUT -Great to use in