The professional PU surround has a thickness of approximately 3.5 cm. The PU material protects the wall from damage and minimizes the number of falling darts, thus also protecting the darts and the floor. The new improved fit with an inner diameter of approximately 45 cm fits perfectly on any bristle dartboard we know - one size fits all. The catch ring can be easily mounted on the dartboard. The width of the protective ring is approximately 12 cm, providing enough protection for the wall, even for inexperienced dart players. The total diameter of the BULL'S Pro Dart Board Surrounds is 68 cm. Available in the colors black, red and blue.