The Galvabond Round End Cap is designed for round tubes with a size of 115mm (100NB). This black-colored end cap is made from galvabond steel, ensuring durability and protection for your tube system. It effectively seals the end of the tube, preventing the ingress of dust, dirt, and moisture. The black finish adds a sleek and stylish touch to your installation. With its precise fit and easy installation, the Galvabond Round End Cap is a reliable choice for securing and sealing your tube system while maintaining an aesthetically pleasing appearance.