D1D1D1D1D1 PR1210 PR1230 Applicable toolholder Milling RERERE Lead angle 0°/ 2° MSRS90 SPMT Carbon steel / Alloy steel ★ P Mold and die steel ★ Usage classification Stainless steel ★ M ★:Roughing / 1st Choice☆:Roughing / 2nd Choice Gray cast iron ★ K ■:Finishing / 1st Choice Nodular cast iron ★ □:Finishing / 2nd Choice Heat-resistant alloy ★ S Titanium alloy ★ Hard materials □ H Dimension (mm) Angle(°)Carbide PVD Insert Description IC S D1 RE AN AN SPMT 180616EN-NB3 18 6.35 6.8 1.6 11 N N RE IC S 3-notch AN SPMT 180616EN-NB4 18 6.35 6.8 1.6 11 N N IC S 4-notch AN SPMT 180616EN-NB3P 18 6.35 6.8 1.6 11 N N M108, M109 IC S 3-notch / Low cutting force AN SPMT 180616EN-NB4P 18 6.35 6.8 1.6 11 N N IC S 4-notch / Low cutting force M AN SPMT 180616EN-V 18 6.35 6.8 1.6 11 N N RE IC S Without notch N : Standard item R : Right hand only L : Left hand only U : Check availability M107