Drain rod brush with stiff, coarse bristles. Attaches to drain rod for removing debris from drain walls of domestic drain pipes. Ideal for sweeping chimneys. Compatible with Silverline Drain Rod Sets and most third party drain rod sets. Brush diameter: 100mm. 16mm bore. Drain rod brush with stiff, coarse bristles. Attaches to drain rod for removing debris from drain walls of domestic drain pipes. Ideal for sweeping chimneys. Compatible with Silverline Drain Rod Sets and most third party drain rod sets. Brush diameter: 100mm. 16mm bore.