A WNMG boring bar 20 mm (SWLNR/L-06) is an internal turning tool holder used in lathe/CNC machines for boring, internal facing, and shoulder machining with WNMG 06 carbide inserts.
S Steel shank boring bar
20 Shank diameter = 20 mm
W Insert shape = WNMG (80 negative trigon)
L Holder style / approach geometry
N Neutral rake / standard configuration
R / L Right-hand / Left-hand cutting direction
06 Insert size (WNMG 0604 / 0608 series).
