Test of steel
The drawer bearing number, mainly to see the track of the steel is good, the thickness of steel drawer with different specifications, different bearing. The purchase can pull the drawer by hand on a beat, see if loose, bang bang sound or flip.
The material of the pulley determines the drawer slide of comfort. Plastic pulley, a steel ball, a wear-resistant nylon is the most common three pulley material, which wear-resistant nylon for the top grade, sliding, silent. Look at the pulley is good or bad, can use a finger to push and pull the drawer, there should be no acerbity, no noise.
Choose points to see the pressure device is not easy to use, you can try it! Look at whether the effort, whether the convenience of braking. But it should be noted that although the pressure device is very good, but the price is more expensive.