BEYOND SNL0025S16 Stepped Internal Left-Hand Threading Boring Bar | 25mm Shank Diameter (1" Imperial Sizing Master) CNC Lathe Turning Toolholder for 16ER & 16ERM Indexable Carbide Inserts PC9030 preventing bird-nesting and workpiece damage

preventing bird-nesting and workpiece damage

ensuring a long and predictable tool life in carbon and alloy steels

"剛性が非常に高く、20mm角の安定感が抜群です"

✔ Quenched 40Cr Steel: Enhanced toughness resists deformation under high-speed industrial conditions

This left-hand orientation allows large 60° triangular negative inserts with strong cutting edges (such as TNMG 220408 / TNMG 220412 / TNMG 220416) to transition smoothly across heavy facing

BEYOND SNL0025S16 Stepped Internal Left-Hand Threading Boring Bar | 25mm Shank Diameter (1" Imperial Sizing Master) CNC Lathe Turning Toolholder for 16ER & 16ERM Indexable Carbide Inserts PC9030 preventing bird-nesting and workpiece damageBEYOND SNL0025S16 Stepped Internal Left Hand Threading Boring Bar 25mm Shank Diameter (1" Imperial Sizing) CNC Lathe Turning Toolholder for 16ER & 16ERM Indexable Carbide Inserts IMPORTANT MACHINING ASSEMBLY NOTICE: Any premium 16ER, 16ERM, or alternative external left hand indexable carbide threading inserts, full profile thread teeth, or molded chipbreaker geometries displayed within our product imagery, schematics, or turret assembly drawings are