The Flexible Scope Valve & Channel Cleaning Brush measures 240 cm in overall length and has been designed with two distinct brush ends. The Valve Cleaning brush end has a 6-mm diameter brush tip, ideal for cleaning the air/water and suction valves found on flexible endoscopes. It has a specially designed stopper that prevents the user from inserting the brush too deep, preventing potential damage. The Channel Cleaning brush end measures 3-mm in diameter and is designed for cleaning the biopsy channel of a flexible endoscope. The unique tip on the brush comes equipped with a silicone leader which helps to guide the brush through the channel.