BEYOND S20R-MTUNR16 (3/4" Shank) Indexable Internal Boring Bar | 20mm CNC Lathe Turning Tool Holder 80 Degree Rhombic Industrial-Grade 12x12mm Shank Right-Hand 90-Degree

Industrial-Grade 12x12mm Shank Right-Hand 90-Degree CNC Lathe Toolholder for RCMT 0803 Round Inserts

it provides maximum side clearance for complex multi-directional back-copying and relief boring

Choose for Mirror Gloss final finishing passes

Utilizing a 35° narrow rhombic geometry on a heavy 25mm round steel shank delivers an optimal balance between aggressive profile clearance and structural core backing—giving you up to 4 distinct cutting corners per insert for excellent profiling reach

UE6020 (The Tough Generalist): If you are doing interrupted cuts (like turning a hex or a shaft with a keyway)

BEYOND S20R-MTUNR16 (3/4" Shank) Indexable Internal Boring Bar | 20mm CNC Lathe Turning Tool Holder 80 Degree Rhombic Industrial-Grade 12x12mm Shank Right-Hand 90-DegreeBEYOND S20R MTUNR16 Right Hand Indexable Internal Boring Bar (3 4" Shank) for High Rigidity 93 CNC Lathe Rough Boring and Deep Hole Machining INDUSTRIAL PACKAGING NOTICE: The indexable carbide insert shown mounted inside the pocket matrix of this boring bar is for spatial layout, dimensional visualization, and cutting geometry representation only. Turning inserts are NOT included in the package and must be purchased as separate line items. 1. Product