TNGG160404R-B PR930 (10pcs) TCGT060104L-F NX2525 and the surface finish was

and the surface finish was mirror-like

Equivalent Models Index: This industrial monolithic indexable internal grooving holder serves as a premium high-rigidity direct replacement for standard market codes including: standard SNGR20R09

"The -PS geometry provides a clean

thin-walled aerospace components

the tool relies on a D-type rigid top-clamp and hole-pull locking architecture that forces the insert downward and backward into a precision-ground hardened carbide shim seat

TNGG160404R-B PR930 (10pcs) TCGT060104L-F NX2525 and the surface finish wasPVD Coated Carbide: PR930 , Designation: TNGG160404R B PR930 Corner Radius(in) RE: 1 64, Carbon Steel Alloy Steel: Light Interruption 2nd Choice ,Stainless Steel: Light Interruption 2nd Choice Color: Reddish Gray , Coating Main Component: iAlN , Advantages: Application: Low machining speed, precise machining with sharp edge