The CHB4M320BC Chamfer FLEX-HONE® tool for surface finishing and deburring is designed for bore size of 0.157" (4mm) and chamfers between 0.016" and 0.030". This tool features 0.75" of abrasive globules which are composed of 320 grit Boron Carbide (BC) and are excellent for Medium to high carbon steels and heat-treated steels to 50 Rc. It is also useful in titanium. 320 grit generally provides an Ra Finish range of 18 - 30 Microinch (.5 - .7 Micrometer).
Can be used in virtually any rotating spindle
Commonly used for removing micro burrs and stress risers of chamfers
Designed to increased flexibility
For chamfer size ranges between 0.016"-0.030"
Polish and radius the inner and outer corners of a hole.
Proudly made in the USA
Self Centering, Self Aligning, Self Compensating for Wear
![BRM CHB4M320BC FLEX-HONE®, 0.157" (4mm) bore, 0.016-0.030 Chamfer, 320 Grit (BC)](/vendors/1175201/large/BC316320BC_PACKAGED.jpg "BRM CHB4M320BC FLEX-HONE®, 0.157" (4mm) bore, 0.016-0.030 Chamfer, 320 Grit (BC)")
