Flex Hone 4 1/8' Std Duty Eng: Standard Duty Engine 4-1/8" - Commonly used for block cylinders or liners, stationary diesel, oil and gas pipes, marine engine and may other applications.  The heavy duty tool is recommended for large diameter or high production applications.

Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov