These dumbbells are slightly thicker and require a little more force making them suitable for intermediate trainers. (agymrat.com)
As we can change the angle of the board we can increase or decrease the resistance, so beginners as well as intermediate trainers can set it to get the most from it. (abmachinesguide.com)
These are most suitable for beginner or intermediate trainers typically holding dumbbells of up to 50 lbs. (agymrat.com)