Brush Research BRMGB41818 GB Flex-Hone®, GB, 4-1/8", 180G

• The GB Series Flex-Hone tools are designed for bore diameters from 3-1/4" thru 4-5/8" and are 13 -1/2" OAL. These standard duty Flex-Hones tools are commonly used to finish and deglaze block cylinders or liners and represent a tremendous value on a cost per cylinder basis.