GENERAL TECHNICAL INFORMATION BORING BAR DESIGNATION SYSTEM (ISO METRIC SHANKS) 1 BORING BAR 2 BAR DIAMETER S: Steel Shank A: Coolant Through Steel Shank C: Carbide Shank E: Coolant Through Carbide Shank X: Special 3 TOOL LENGTH 4 CLAMPING SYSTEM 5 INSERT SHAPE C D E P / LEVER LOCK C / TOP CLAMP K 125 U 350 M 150 V 400 Q 180 W 450 H K R R 200 Y 500 S / SCREW CLAMP M / MULTI LOCK S 250 X Sonder T 300 S T V D / DOUBLE CLAMP W / WEDGE CLAMP W 1030