CORTEX 110kg Hex Fixed Dumbbell Set (1-10kg Pairs)Open up huge possibilities in your workout space with the Cortex 1 10kg Hex Dumbbell Set. Progress your training gradually with 10 weight pairs increasing at 1kg 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.