The BC Series Flex-Hone tool is designed for use on any type or size of cylinder from 4 mm up to 3 in. in diameter. Designed for surface finishing and cross hole deburring in brake cylinders wheel cylinders hydraulics pneumatics and valve guides.Features: The Flex-Hone Tool is a resilient flexible honing tool with a soft cutting action. It’s unique construction allows the abrasive globules or stones to float assuring the tool will be self-centering self-aligning to the bore and self-compensating for wear. Whether your need is cross hole deburring surface finishing or edge blending there is a Flex- Hone Tool designed for you. In Automotive Hydraulic Pneumatic or Industrial applications the Flex-Hone Tool will provide a superior surface finish bringing increased. Item Weight - 0.200 lbs.Typical Applications: Air Compressors. Hydraulic Ram Cy