Solid Steel Hinges: Perfectly crafted hinges to avoid accidents while in use. Enhanced Spring: Crafted using quality springs to endure long-term and frequent use.Easy Turn Dial: Helps in adjusting resistance level as per requirement. Resistance Level Indicator: Allows you to adjust resistance from 20 to 90lbs..Made of quality material to ensure a non-slip surface. The ergonomic make helps in increasing strength of your hands and lower arms to increase endurance, allowing you to perform more repetitions and reach new heights at the gym.