The drawer can bear the weight, mainly depending on whether the steel of the track is good or not. The thickness of the drawer steel of different specifications is different, and the bearing weight is also different. When you purchase, you can pull out the drawer and press it slightly on your hand to see if it will loosen, squeak or flip.
Look at the material
The material of the pulley determines the comfort when the drawer slides. Plastic pulleys, steel balls, and wear-resistant nylon are the three most common types of pulley materials, of which wear-resistant nylon is the top grade, which is quiet and silent when sliding. Look at the quality of the pulley, you can push and pull the drawer with one finger, there should be no guilt, no noise.
If you want to see if the pressure device is good or not, just try it out! See if it is labor-saving and whether the brake is convenient. However, it should be noted that although the pressure device is very good, it is more expensive.