Excaliber is fortified with a unique blend of tough resilient Acrylic and Urethane polymers that will not yellow. Providing an outstanding durability, Excaliber can be burnished to a wet, high bright look. Tough, flexible and great for all traffic areas. Maintained easily with high-speed burnishing, lower speed spray buffing, or Excaliber restorer. Equally effective on resilient floors, Terrazzo floors, sealed concrete and wood surfaces.