Teng 3 4F:1M Magnetic Adaptor AB2758 204 Groz Kt01 Knurl Tool Holder ABD_AB6537 282 Groz Kt01 Knurl Tool Holder cost effectiveness Very high feed rates and speeds Strong drill body Long tool life of both inserts and drills Square inserts with four cutting edges Good surface finish even at high feed rates Process security Unique chip flute design excellent chip evacuation Drill and insert strength Low friction coating High flexibility Large range of drill diameters and lengths User friendly Low noise thanks to optimised chip flute design Informative laser marking on shank M340085M Insert Adaptor Individual insert adaptor for converting up and with magnets in the drive disc Ideal for where space is limited or a regular adaptor is not suitable