Open up huge possibilities in your workout space with the Cortex 4kg, 6kg, 8kg & 10kg Hex Dumbbell Set. Progress your training gradually with 4 weight pairs increasing at 2kg increments. Find the right weights to target and isolate muscle groups, or add dumbbells to your body weight workout to increase resistance and challenge. These dumbbells are safe for home or gym use with hexagonal rubber coated heads to reduce rolling and damage to floors and walls. Features Rubber coated for handling and safety Contoured Handle with Commercial Grade Knurling Tough, durable and safe Thick rubber coating protects equipment and flooring when accidentally dropped. Package Includes 2x 4kg Hex Dumbbells 2x 6kg Hex Dumbbells 2x 8kg Hex Dumbbells 2x 10kg Hex Dumbbells