Grade 11 Ball Bearing Hinge. Square or Radius options. (Max Load 80kg). A popular type of door hinge. They have a CE mark and are Certifire tested. BS EN 1935 rated. This substantial premium hinge carries a 25 year mechanical guarantee. Suitable for industrial, commercial and domestic use. Ball bearing hinges have always been very popular for their smooth operation, durability, and long lasting design. It will look aesthetically pleasing and from a practical viewpoint it helps spread the load evenly and will help to overcome twisting or warping.