±0.03 CW RE W1S CUTDIA PR1725 PR1535 PR1225 PDL025 KW10 Applicable toolholder Cut-Off Small diameter cut-off TKF type TKF12 Carbon steel / Alloy steel Q P P P Stainless steel P Q P M Cast iron Q K Non-ferrous metals Q P N Dimension (mm) Angle(°)Tolerance Carbide PVD - Insert Description CW S D1 RE W1 PSIRR CWmin. CWmax. TKF 12L050-NB-20DR 0.5 5 N N N 12L070-NB-20DR 0.7 8 N N N 12L100-NB-20DR 1 12 N N N D1 RE 12L150-NB-20DR 1.5 12 N N N PSIRRCUTDIA 12L200-NB-20DR12R050-NB-20DR20.58.7 5 0 3 125 20 - 0.03 + 0.03 N NNN N H11, H16N Without Chipbreaker 12R070-NB-20DR 0.7 8 N N N 12R100-NB-20DR 1 12 N N N 12R150-NB-20DR 1.5 12 N N N 12R200-NB-20DR 2 12 N N N Lead angle (PSIRR) shows the angle when installed in toolholder. As Fig. 1 of H12 shows, the cut-off diameter of the insert (CUTDIA) is indicated when the top of the cut-off edge progresses 1mm from the center.Right-hand shown H N : Standard item R : Right hand only L : Left hand only U : Check availability H9