The Shark NV681UKT 40 Brush Head Control Board Part is a replacement part specifically designed for the Shark NV681UKT 40 vacuum cleaner model. This control board, made by the brand Shark, controls the brush head of the vacuum, ensuring efficient cleaning performance. Manufactured in China, this part is essential for maintaining the functionality of your Shark vacuum, allowing you to easily replace a damaged or faulty control board and keep your appliance in top condition.