MGMN-250-M Grade BPG20B-PVD Cut-Off & Grooving Insert ~ Chip breaker is designed for turning , grooving & parting applications. ~ Specially designed chip breaker allows for a smoother chip flow versus conventional flattop geometries through the use of a central chip breaker. ~ Specially placed convex dots assit with chip control in external machining, for a smoother chip flow. ~ PVD coated micro-grain carbide can be used for a varity of stainless steel finishing at medium to low cutting speeds. ~ Excellent edge strength and high surface quality provide the perffect ride when cutting. ~ High thermal shock resistance. ~ Suitable for light interrupted cuts. ~ Cutting width is .098. ~ Overall length is .73. ~ d is .079. ~ Cutting edge height is .152. ~ r is 1/128.