Premium-grade S-MWLN heavy-duty boring bar for CNC and manual lathes. Right Hand hand tool, model S12S-MWLN R-4, with 3/4" shank and 10" overall length, min bore: 1" Negative rake WNMG43 insert with 95° approach angle for high-rigidity cutting. Constructed from heat-treated alloy steel with black oxide finish for corrosion resistance Oxide-coated body enhances wear resistance and reduces glare under shop lighting. Ideal for internal turning, rough boring, and facing in deep-hole machining Each bar includes a clamp, clamp screw, and lock pin - ready to mount. Supports TiN and CVD-coated inserts for various work materials like steel and aluminum Available in both right-hand and left-hand cutting directions to suit different machine setups. Replacement parts are readily available from Accusize Industrial Tools Accusize S-MWLN heavy-duty boring bar, model S12S-MWLN R-4, is designed for internal turning, roughing, and facing. This right hand-hand tool features a 3/4" shank and 10" overall length, supporting a minimum bore of 1" and a functional cutting depth (F) of 1/2". It uses WNMG43 inserts and includes a lock pin (ZX613), clamp (CK232), and clamp screw (SD6x20). Select Accusize for reliable performance and high-precision boring operations.