S12 MCLNR 4 Indexable Boring Bar for CNC Turning
$259.63 $420.60
RMC indexable boring bars for CNC turning, internal boring, and precision metalworking. Designed for use with indexable insert tooling systems. Looking for American made cutting tools? Shop USA-made solid carbide end mills built in Michigan.
537 boring bars across 89 ANSI styles — don't scroll the whole list, jump straight to your code. Quick read: the letters tell you the clamping system, the insert shape the bar takes (C = CNMG/CCMT · D = DNMG · T = TNMG · W = WNMG) and the hand (R = right · L = left).
🔍 Know your code? Type it in the RMC code finder →
Most stocked styles
MCLNR (25) MCLNL (22) MTFNR (18) NER (14) MTFNL (13) SISTHOR (13) MSKNR (12) SIMTUNR (12) MWLNR (11) SCLCR (11) MDJNR (11) NEL (11) +77 more styles →
New to holders? Complete Guide to CNC Tool Holders · ANSI designation chart
Also in the RMC line: Tool Holders · Interchangeable Heads · Pair with Turning Inserts
$259.63 $420.60
$259.63 $420.60
$259.63 $420.60
$288.44 $467.28
$317.30 $514.02
$317.30 $514.02
$331.74 $537.42
$364.23 $590.06
$360.60 $584.18
$360.60 $584.18
$360.60 $584.18
$432.70 $700.98
$432.70 $700.98
$432.70 $700.98