BEYOND CGBR1212H16 External Face Grooving & Turning Toolholder | 12x12mm (0.472" x 0.472") Imperial-Equivalent Square Shank Right-Hand CNC Lathe Cut-Off Tool Body for GB32R Indexable Carbide Inserts S20R-MSSNL12 The highly rigid 25mm left-handed

The highly rigid 25mm left-handed core of the S25S-STUCL16 tool holder makes it an excellent choice for a variety of critical internal turning jobs:

traditional internal profiling

Since a standard 5/16" imperial tool slot measures exactly 0

We are using this on our heavy CNC lathe to turn down raw forged mining pins

"I used these for the final pass on some carbon steel pins

BEYOND CGBR1212H16 External Face Grooving & Turning Toolholder | 12x12mm (0.472" x 0.472") Imperial-Equivalent Square Shank Right-Hand CNC Lathe Cut-Off Tool Body for GB32R Indexable Carbide Inserts S20R-MSSNL12 The highly rigid 25mm left-handedBEYOND CGBR1212H16 External Face Grooving & Turning Toolholder 12x12mm (0. 472" Square Shank) Right Hand Monolithic CNC Lathe Body for GB32R Indexable Axial Grooving Carbide Inserts CRITICAL EXCLUSION NOTICE: The indexable carbide face grooving or profiling insert (Model: GB32R) shown mounted inside the toolholder pocket seat within our product photography, dimensional blueprints, or setup diagrams is for spatial demonstration and seating alignment