The brm flex hone GBD40012 is a 4″ (10mm) 120SC Flex Hone designed specifically for automotive use. Manufactured by the brand Flex, this tool is ideal for honing cylinder blocks and heads with ease. Its flexible design allows for easy access to tight spaces, providing a smooth and efficient honing experience for mechanics and car enthusiasts alike. Perfect for achieving optimal performance and efficiency in automotive engines, the brm flex hone GBD40012 is a must-have tool for any automotive workshop.